diff --git a/src/Octokit.Webhooks/Converter/JsonStringEnumMemberConverterWithFallback.cs b/src/Octokit.Webhooks/Converter/JsonStringEnumMemberConverterWithFallback.cs
deleted file mode 100644
index 64a47982..00000000
--- a/src/Octokit.Webhooks/Converter/JsonStringEnumMemberConverterWithFallback.cs
+++ /dev/null
@@ -1,14 +0,0 @@
-namespace System.Text.Json.Serialization;
-
-public sealed class JsonStringEnumMemberConverterWithFallback : JsonStringEnumMemberConverter
-{
-    private static readonly JsonStringEnumMemberConverterOptions Options = new()
-    {
-        DeserializationFailureFallbackValue = -1, // By convention, we use -1 to represent unknown values in all enums.
-    };
-
-    public JsonStringEnumMemberConverterWithFallback()
-        : base(Options)
-    {
-    }
-}
diff --git a/src/Octokit.Webhooks/Converter/StringEnumConverter.cs b/src/Octokit.Webhooks/Converter/StringEnumConverter.cs
new file mode 100644
index 00000000..a3f97e41
--- /dev/null
+++ b/src/Octokit.Webhooks/Converter/StringEnumConverter.cs
@@ -0,0 +1,18 @@
+namespace Octokit.Webhooks.Converter;
+
+using System;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+using Octokit.Webhooks.Extensions;
+
+public sealed class StringEnumConverter<TEnum> : JsonConverter<StringEnum<TEnum>>
+    where TEnum : struct
+{
+    public override StringEnum<TEnum> Read(
+        ref Utf8JsonReader reader,
+        Type typeToConvert,
+        JsonSerializerOptions options) => new(reader.GetString()!);
+
+    public override void Write(Utf8JsonWriter writer, StringEnum<TEnum> value, JsonSerializerOptions options) =>
+        JsonSerializer.Serialize(writer, value.StringValue, options);
+}
diff --git a/src/Octokit.Webhooks/Converter/StringEnumEnumerableConverter.cs b/src/Octokit.Webhooks/Converter/StringEnumEnumerableConverter.cs
new file mode 100644
index 00000000..fe91dc63
--- /dev/null
+++ b/src/Octokit.Webhooks/Converter/StringEnumEnumerableConverter.cs
@@ -0,0 +1,61 @@
+namespace Octokit.Webhooks.Converter;
+
+using System;
+using System.Collections.Generic;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+using Octokit.Webhooks.Extensions;
+
+public sealed class StringEnumEnumerableConverter<TEnum> : JsonConverter<IEnumerable<StringEnum<TEnum>>>
+    where TEnum : struct
+{
+    private static readonly JsonSerializerOptions Options = new()
+    {
+        Converters = { Activator.CreateInstance<StringEnumConverter<TEnum>>() },
+    };
+
+    public override IEnumerable<StringEnum<TEnum>> Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options) =>
+        ReadInternal(ref reader);
+
+    public override void Write(Utf8JsonWriter writer, IEnumerable<StringEnum<TEnum>> value, JsonSerializerOptions options) =>
+        WriteInternal(writer, value);
+
+    private static IEnumerable<StringEnum<TEnum>> ReadInternal(ref Utf8JsonReader reader)
+    {
+        if (reader.TokenType == JsonTokenType.Null)
+        {
+            throw new JsonException("Unexpected null value.");
+        }
+
+        var returnValue = new List<StringEnum<TEnum>>();
+
+        while (reader.TokenType != JsonTokenType.EndArray)
+        {
+            if (reader.TokenType != JsonTokenType.StartArray)
+            {
+                returnValue.Add((StringEnum<TEnum>)JsonSerializer.Deserialize(ref reader, typeof(StringEnum<TEnum>), Options)!);
+            }
+
+            reader.Read();
+        }
+
+        return returnValue!;
+    }
+
+    private static void WriteInternal(Utf8JsonWriter writer, IEnumerable<StringEnum<TEnum>> value)
+    {
+        if (value == null)
+        {
+            throw new JsonException("Unexpected null value.");
+        }
+
+        writer.WriteStartArray();
+
+        foreach (var data in value)
+        {
+            JsonSerializer.Serialize(writer, data, Options);
+        }
+
+        writer.WriteEndArray();
+    }
+}
diff --git a/src/Octokit.Webhooks/Events/CreateEvent.cs b/src/Octokit.Webhooks/Events/CreateEvent.cs
index 9fa4f894..1a0f00c5 100644
--- a/src/Octokit.Webhooks/Events/CreateEvent.cs
+++ b/src/Octokit.Webhooks/Events/CreateEvent.cs
@@ -8,7 +8,8 @@ public sealed record CreateEvent : WebhookEvent
     public string Ref { get; init; } = null!;
 
     [JsonPropertyName("ref_type")]
-    public RefType RefType { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<RefType>))]
+    public StringEnum<RefType> RefType { get; init; } = null!;
 
     [JsonPropertyName("master_branch")]
     public string MasterBranch { get; init; } = null!;
diff --git a/src/Octokit.Webhooks/Events/DeleteEvent.cs b/src/Octokit.Webhooks/Events/DeleteEvent.cs
index eeaec61d..4f90424b 100644
--- a/src/Octokit.Webhooks/Events/DeleteEvent.cs
+++ b/src/Octokit.Webhooks/Events/DeleteEvent.cs
@@ -8,7 +8,8 @@ public sealed record DeleteEvent : WebhookEvent
     public string Ref { get; init; } = null!;
 
     [JsonPropertyName("ref_type")]
-    public RefType RefType { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<RefType>))]
+    public StringEnum<RefType> RefType { get; init; } = null!;
 
     [JsonPropertyName("pusher_type")]
     public string PusherType { get; init; } = null!;
diff --git a/src/Octokit.Webhooks/Events/InstallationRepositoriesEvent.cs b/src/Octokit.Webhooks/Events/InstallationRepositoriesEvent.cs
index 75e8a543..1955deeb 100644
--- a/src/Octokit.Webhooks/Events/InstallationRepositoriesEvent.cs
+++ b/src/Octokit.Webhooks/Events/InstallationRepositoriesEvent.cs
@@ -9,7 +9,8 @@ public abstract record InstallationRepositoriesEvent : WebhookEvent
     public new Models.Installation Installation { get; init; } = null!;
 
     [JsonPropertyName("repository_selection")]
-    public InstallationRepositorySelection RepositorySelection { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<InstallationRepositorySelection>))]
+    public StringEnum<InstallationRepositorySelection> RepositorySelection { get; init; } = null!;
 
     [JsonPropertyName("repositories_added")]
     public IEnumerable<Models.InstallationRepositoriesEvent.Repository> RepositoriesAdded { get; init; } = null!;
diff --git a/src/Octokit.Webhooks/Events/MembershipEvent.cs b/src/Octokit.Webhooks/Events/MembershipEvent.cs
index f63442a3..9e726258 100644
--- a/src/Octokit.Webhooks/Events/MembershipEvent.cs
+++ b/src/Octokit.Webhooks/Events/MembershipEvent.cs
@@ -8,7 +8,8 @@
 public abstract record MembershipEvent : WebhookEvent
 {
     [JsonPropertyName("scope")]
-    public Scope Scope { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<Scope>))]
+    public StringEnum<Scope> Scope { get; init; } = null!;
 
     [JsonPropertyName("member")]
     public User Member { get; init; } = null!;
diff --git a/src/Octokit.Webhooks/Events/RepositoryImportEvent.cs b/src/Octokit.Webhooks/Events/RepositoryImportEvent.cs
index 46ba9591..27dfc7be 100644
--- a/src/Octokit.Webhooks/Events/RepositoryImportEvent.cs
+++ b/src/Octokit.Webhooks/Events/RepositoryImportEvent.cs
@@ -7,5 +7,6 @@
 public sealed record RepositoryImportEvent : WebhookEvent
 {
     [JsonPropertyName("status")]
-    public Status Status { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<Status>))]
+    public StringEnum<Status> Status { get; init; } = null!;
 }
diff --git a/src/Octokit.Webhooks/Events/StatusEvent.cs b/src/Octokit.Webhooks/Events/StatusEvent.cs
index 1ec065e0..d9ae2442 100644
--- a/src/Octokit.Webhooks/Events/StatusEvent.cs
+++ b/src/Octokit.Webhooks/Events/StatusEvent.cs
@@ -28,7 +28,8 @@ public sealed record StatusEvent : WebhookEvent
     public string? Description { get; init; }
 
     [JsonPropertyName("state")]
-    public StatusState State { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<StatusState>))]
+    public StringEnum<StatusState> State { get; init; } = null!;
 
     [JsonPropertyName("commit")]
     public Commit Commit { get; init; } = null!;
diff --git a/src/Octokit.Webhooks/Extensions/StringEnum.cs b/src/Octokit.Webhooks/Extensions/StringEnum.cs
new file mode 100644
index 00000000..02b1842d
--- /dev/null
+++ b/src/Octokit.Webhooks/Extensions/StringEnum.cs
@@ -0,0 +1,104 @@
+namespace Octokit.Webhooks.Extensions;
+
+using System;
+using System.Globalization;
+using System.Linq;
+using System.Runtime.Serialization;
+using JetBrains.Annotations;
+
+[PublicAPI]
+public sealed record StringEnum<TEnum>
+    where TEnum : struct
+{
+    private TEnum? parsedValue;
+
+    public StringEnum(string stringValue)
+    {
+        this.StringValue = stringValue;
+        this.parsedValue = null;
+    }
+
+    public StringEnum(TEnum parsedValue)
+    {
+        if (!Enum.IsDefined(typeof(TEnum), parsedValue))
+        {
+            throw GetArgumentException(parsedValue.ToString());
+        }
+
+        this.StringValue = ToEnumString(parsedValue);
+        this.parsedValue = parsedValue;
+    }
+
+    public string StringValue { get; }
+
+    public TEnum Value => this.parsedValue ??= this.ParseValue();
+
+    public static implicit operator StringEnum<TEnum>(string value) => new(value);
+
+    public static implicit operator StringEnum<TEnum>(TEnum parsedValue) => new(parsedValue);
+
+    public bool TryParse(out TEnum value)
+    {
+        if (this.parsedValue is not null)
+        {
+            value = this.parsedValue.Value;
+            return true;
+        }
+
+        try
+        {
+            value = ToEnum(this.StringValue);
+            this.parsedValue = value;
+            return true;
+        }
+        catch (ArgumentException)
+        {
+            value = default;
+            return false;
+        }
+    }
+
+    private static ArgumentException GetArgumentException(string? value) => new(string.Format(
+        CultureInfo.InvariantCulture,
+        "Value '{0}' is not a valid '{1}' enum value.",
+        value,
+        typeof(TEnum).Name));
+
+    private TEnum ParseValue()
+    {
+        if (this.TryParse(out var value))
+        {
+            return value;
+        }
+
+        throw GetArgumentException(this.StringValue);
+    }
+
+    private static string ToEnumString(TEnum type)
+    {
+        var enumType = typeof(TEnum);
+        var name = Enum.GetName(enumType, type);
+        if (name is not null)
+        {
+            var enumMemberAttribute = ((EnumMemberAttribute[])enumType.GetField(name)!.GetCustomAttributes(typeof(EnumMemberAttribute), true)).Single();
+            return enumMemberAttribute.Value!;
+        }
+
+        throw new ArgumentException(type.ToString());
+    }
+
+    private static TEnum ToEnum(string str)
+    {
+        var enumType = typeof(TEnum);
+        foreach (var name in Enum.GetNames(enumType))
+        {
+            var enumMemberAttribute = ((EnumMemberAttribute[])enumType.GetField(name)!.GetCustomAttributes(typeof(EnumMemberAttribute), true)).Single();
+            if (enumMemberAttribute.Value == str)
+            {
+                return (TEnum)Enum.Parse(enumType, name);
+            }
+        }
+
+        throw new ArgumentException(str);
+    }
+}
diff --git a/src/Octokit.Webhooks/Models/ActiveLockReason.cs b/src/Octokit.Webhooks/Models/ActiveLockReason.cs
index 59a5f7e1..b5489890 100644
--- a/src/Octokit.Webhooks/Models/ActiveLockReason.cs
+++ b/src/Octokit.Webhooks/Models/ActiveLockReason.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum ActiveLockReason
 {
-    Unknown = -1,
     [EnumMember(Value = "resolved")]
     Resolved,
     [EnumMember(Value = "off-topic")]
diff --git a/src/Octokit.Webhooks/Models/App.cs b/src/Octokit.Webhooks/Models/App.cs
index c6094bf9..4f97267f 100644
--- a/src/Octokit.Webhooks/Models/App.cs
+++ b/src/Octokit.Webhooks/Models/App.cs
@@ -39,5 +39,6 @@ public sealed record App
     public AppPermissions? Permissions { get; init; }
 
     [JsonPropertyName("events")]
-    public IEnumerable<AppEvent>? Events { get; init; }
+    [JsonConverter(typeof(StringEnumEnumerableConverter<AppEvent>))]
+    public IEnumerable<StringEnum<AppEvent>>? Events { get; init; }
 }
diff --git a/src/Octokit.Webhooks/Models/AppEvent.cs b/src/Octokit.Webhooks/Models/AppEvent.cs
index 855b3bb0..275f0056 100644
--- a/src/Octokit.Webhooks/Models/AppEvent.cs
+++ b/src/Octokit.Webhooks/Models/AppEvent.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum AppEvent
 {
-    Unknown = -1,
     [EnumMember(Value = "*")]
     All,
     [EnumMember(Value = "branch_protection_rule")]
diff --git a/src/Octokit.Webhooks/Models/AppPermissions.cs b/src/Octokit.Webhooks/Models/AppPermissions.cs
index f83df382..a7b83449 100644
--- a/src/Octokit.Webhooks/Models/AppPermissions.cs
+++ b/src/Octokit.Webhooks/Models/AppPermissions.cs
@@ -4,110 +4,145 @@
 public sealed record AppPermissions
 {
     [JsonPropertyName("actions")]
-    public AppPermissionsLevel? Actions { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? Actions { get; init; }
 
     [JsonPropertyName("administration")]
-    public AppPermissionsLevel? Administration { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? Administration { get; init; }
 
     [JsonPropertyName("blocking")]
     public AppPermissionsLevel? Blocking { get; init; }
 
     [JsonPropertyName("checks")]
-    public AppPermissionsLevel? Checks { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? Checks { get; init; }
 
     [JsonPropertyName("content_references")]
-    public AppPermissionsLevel? ContentReferences { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? ContentReferences { get; init; }
 
     [JsonPropertyName("contents")]
-    public AppPermissionsLevel? Contents { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? Contents { get; init; }
 
     [JsonPropertyName("deployments")]
-    public AppPermissionsLevel? Deployments { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? Deployments { get; init; }
 
     [JsonPropertyName("discussions")]
-    public AppPermissionsLevel? Discussions { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? Discussions { get; init; }
 
     [JsonPropertyName("emails")]
-    public AppPermissionsLevel? Emails { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? Emails { get; init; }
 
     [JsonPropertyName("environments")]
-    public AppPermissionsLevel? Environments { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? Environments { get; init; }
 
     [JsonPropertyName("issues")]
-    public AppPermissionsLevel? Issues { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? Issues { get; init; }
 
     [JsonPropertyName("members")]
-    public AppPermissionsLevel? Members { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? Members { get; init; }
 
     [JsonPropertyName("merge_queues")]
-    public AppPermissionsLevel? MergeQueues { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? MergeQueues { get; init; }
 
     [JsonPropertyName("metadata")]
-    public AppPermissionsLevel? Metadata { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? Metadata { get; init; }
 
     [JsonPropertyName("organization_administration")]
-    public AppPermissionsLevel? OrganizationAdministration { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? OrganizationAdministration { get; init; }
 
     [JsonPropertyName("organization_hooks")]
-    public AppPermissionsLevel? OrganizationHooks { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? OrganizationHooks { get; init; }
 
     [JsonPropertyName("organization_packages")]
-    public AppPermissionsLevel? OrganizationPackages { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? OrganizationPackages { get; init; }
 
     [JsonPropertyName("organization_plan")]
-    public AppPermissionsLevel? OrganizationPlan { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? OrganizationPlan { get; init; }
 
     [JsonPropertyName("organization_projects")]
-    public AppPermissionsLevel? OrganizationProjects { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? OrganizationProjects { get; init; }
 
     [JsonPropertyName("organization_secrets")]
-    public AppPermissionsLevel? OrganizationSecrets { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? OrganizationSecrets { get; init; }
 
     [JsonPropertyName("organization_self_hosted_runners")]
-    public AppPermissionsLevel? OrganizationSelfHostedRunners { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? OrganizationSelfHostedRunners { get; init; }
 
     [JsonPropertyName("organization_user_blocking")]
-    public AppPermissionsLevel? OrganizationUserBlocking { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? OrganizationUserBlocking { get; init; }
 
     [JsonPropertyName("packages")]
-    public AppPermissionsLevel? Packages { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? Packages { get; init; }
 
     [JsonPropertyName("pages")]
-    public AppPermissionsLevel? Pages { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? Pages { get; init; }
 
     [JsonPropertyName("pull_requests")]
-    public AppPermissionsLevel? PullRequests { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? PullRequests { get; init; }
 
     [JsonPropertyName("repository_hooks")]
-    public AppPermissionsLevel? RepositoryHooks { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? RepositoryHooks { get; init; }
 
     [JsonPropertyName("repository_projects")]
-    public AppPermissionsLevel? RepositoryProjects { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? RepositoryProjects { get; init; }
 
     [JsonPropertyName("secret_scanning_alerts")]
-    public AppPermissionsLevel? SecretScanningAlerts { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? SecretScanningAlerts { get; init; }
 
     [JsonPropertyName("secrets")]
-    public AppPermissionsLevel? Secrets { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? Secrets { get; init; }
 
     [JsonPropertyName("security_events")]
-    public AppPermissionsLevel? SecurityEvents { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? SecurityEvents { get; init; }
 
     [JsonPropertyName("security_scanning_alert")]
-    public AppPermissionsLevel? SecurityScanningAlert { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? SecurityScanningAlert { get; init; }
 
     [JsonPropertyName("single_file")]
-    public AppPermissionsLevel? SingleFile { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? SingleFile { get; init; }
 
     [JsonPropertyName("statuses")]
-    public AppPermissionsLevel? Statuses { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? Statuses { get; init; }
 
     [JsonPropertyName("team_discussions")]
-    public AppPermissionsLevel? TeamDiscussions { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? TeamDiscussions { get; init; }
 
     [JsonPropertyName("vulnerability_alerts")]
-    public AppPermissionsLevel? VulnerabilityAlerts { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? VulnerabilityAlerts { get; init; }
 
     [JsonPropertyName("workflows")]
-    public AppPermissionsLevel? Workflows { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AppPermissionsLevel>))]
+    public StringEnum<AppPermissionsLevel>? Workflows { get; init; }
 }
diff --git a/src/Octokit.Webhooks/Models/AppPermissionsLevel.cs b/src/Octokit.Webhooks/Models/AppPermissionsLevel.cs
index 263b707b..7ca3d1c4 100644
--- a/src/Octokit.Webhooks/Models/AppPermissionsLevel.cs
+++ b/src/Octokit.Webhooks/Models/AppPermissionsLevel.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum AppPermissionsLevel
 {
-    Unknown = -1,
     [EnumMember(Value = "read")]
     Read,
     [EnumMember(Value = "write")]
diff --git a/src/Octokit.Webhooks/Models/AuthorAssociation.cs b/src/Octokit.Webhooks/Models/AuthorAssociation.cs
index f06abd3a..13567069 100644
--- a/src/Octokit.Webhooks/Models/AuthorAssociation.cs
+++ b/src/Octokit.Webhooks/Models/AuthorAssociation.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum AuthorAssociation
 {
-    Unknown = -1,
     [EnumMember(Value = "COLLABORATOR")]
     Collaborator,
     [EnumMember(Value = "CONTRIBUTOR")]
diff --git a/src/Octokit.Webhooks/Models/BranchProtectionRule.cs b/src/Octokit.Webhooks/Models/BranchProtectionRule.cs
index 45406b78..5c4e41c1 100644
--- a/src/Octokit.Webhooks/Models/BranchProtectionRule.cs
+++ b/src/Octokit.Webhooks/Models/BranchProtectionRule.cs
@@ -27,10 +27,12 @@ public sealed record BranchProtectionRule
     public bool? CreateProtected { get; init; }
 
     [JsonPropertyName("allow_deletions_enforcement_level")]
-    public EnforcementLevel AllowDeletionsEnforcementLevel { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<EnforcementLevel>))]
+    public StringEnum<EnforcementLevel> AllowDeletionsEnforcementLevel { get; init; } = null!;
 
     [JsonPropertyName("allow_force_pushes_enforcement_level")]
-    public EnforcementLevel AllowForcePushesEnforcementLevel { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<EnforcementLevel>))]
+    public StringEnum<EnforcementLevel> AllowForcePushesEnforcementLevel { get; init; } = null!;
 
     [JsonPropertyName("authorized_actor_names")]
     public IEnumerable<string> AuthorizedActorNames { get; init; } = null!;
@@ -48,13 +50,16 @@ public sealed record BranchProtectionRule
     public bool IgnoreApprovalsFromContributors { get; init; }
 
     [JsonPropertyName("linear_history_requirement_enforcement_level")]
-    public EnforcementLevel LinearHistoryRequirementEnforcementLevel { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<EnforcementLevel>))]
+    public StringEnum<EnforcementLevel> LinearHistoryRequirementEnforcementLevel { get; init; } = null!;
 
     [JsonPropertyName("merge_queue_enforcement_level")]
-    public EnforcementLevel MergeQueueEnforcementLevel { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<EnforcementLevel>))]
+    public StringEnum<EnforcementLevel> MergeQueueEnforcementLevel { get; init; } = null!;
 
     [JsonPropertyName("pull_request_reviews_enforcement_level")]
-    public EnforcementLevel PullRequestReviewsEnforcementLevel { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<EnforcementLevel>))]
+    public StringEnum<EnforcementLevel> PullRequestReviewsEnforcementLevel { get; init; } = null!;
 
     [JsonPropertyName("require_code_owner_review")]
     public bool RequireCodeOwnerReview { get; init; }
@@ -63,19 +68,23 @@ public sealed record BranchProtectionRule
     public long RequiredApprovingReviewCount { get; init; }
 
     [JsonPropertyName("required_conversation_resolution_level")]
-    public EnforcementLevel RequiredConversationResolutionLevel { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<EnforcementLevel>))]
+    public StringEnum<EnforcementLevel> RequiredConversationResolutionLevel { get; init; } = null!;
 
     [JsonPropertyName("required_deployments_enforcement_level")]
-    public EnforcementLevel RequiredDeploymentsEnforcementLevel { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<EnforcementLevel>))]
+    public StringEnum<EnforcementLevel> RequiredDeploymentsEnforcementLevel { get; init; } = null!;
 
     [JsonPropertyName("required_status_checks")]
     public IEnumerable<string> RequiredStatusChecks { get; init; } = null!;
 
     [JsonPropertyName("required_status_checks_enforcement_level")]
-    public EnforcementLevel RequiredStatusChecksEnforcementLevel { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<EnforcementLevel>))]
+    public StringEnum<EnforcementLevel> RequiredStatusChecksEnforcementLevel { get; init; } = null!;
 
     [JsonPropertyName("signature_requirement_enforcement_level")]
-    public EnforcementLevel SignatureRequirementEnforcementLevel { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<EnforcementLevel>))]
+    public StringEnum<EnforcementLevel> SignatureRequirementEnforcementLevel { get; init; } = null!;
 
     [JsonPropertyName("strict_required_status_checks_policy")]
     public bool StrictRequiredStatusChecksPolicy { get; init; }
diff --git a/src/Octokit.Webhooks/Models/BranchProtectionRuleEvent/ChangesEnforcementLevel.cs b/src/Octokit.Webhooks/Models/BranchProtectionRuleEvent/ChangesEnforcementLevel.cs
index 1474f65b..a91228a9 100644
--- a/src/Octokit.Webhooks/Models/BranchProtectionRuleEvent/ChangesEnforcementLevel.cs
+++ b/src/Octokit.Webhooks/Models/BranchProtectionRuleEvent/ChangesEnforcementLevel.cs
@@ -4,5 +4,6 @@ namespace Octokit.Webhooks.Models.BranchProtectionRuleEvent;
 public sealed record ChangesEnforcementLevel
 {
     [JsonPropertyName("from")]
-    public EnforcementLevel? From { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<EnforcementLevel>))]
+    public StringEnum<EnforcementLevel>? From { get; init; }
 }
diff --git a/src/Octokit.Webhooks/Models/CheckRunEvent/CheckRun.cs b/src/Octokit.Webhooks/Models/CheckRunEvent/CheckRun.cs
index 560cfaf3..76f4e12b 100644
--- a/src/Octokit.Webhooks/Models/CheckRunEvent/CheckRun.cs
+++ b/src/Octokit.Webhooks/Models/CheckRunEvent/CheckRun.cs
@@ -25,10 +25,12 @@ public sealed record CheckRun
     public string DetailsUrl { get; init; } = null!;
 
     [JsonPropertyName("status")]
-    public CheckRunStatus Status { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<CheckRunStatus>))]
+    public StringEnum<CheckRunStatus> Status { get; init; } = null!;
 
     [JsonPropertyName("conclusion")]
-    public CheckRunConclusion? Conclusion { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<CheckRunConclusion>))]
+    public StringEnum<CheckRunConclusion>? Conclusion { get; init; }
 
     [JsonPropertyName("started_at")]
     [JsonConverter(typeof(DateTimeOffsetConverter))]
diff --git a/src/Octokit.Webhooks/Models/CheckRunEvent/CheckRunConclusion.cs b/src/Octokit.Webhooks/Models/CheckRunEvent/CheckRunConclusion.cs
index a6e5098b..d9070f6a 100644
--- a/src/Octokit.Webhooks/Models/CheckRunEvent/CheckRunConclusion.cs
+++ b/src/Octokit.Webhooks/Models/CheckRunEvent/CheckRunConclusion.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.CheckRunEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum CheckRunConclusion
 {
-    Unknown = -1,
     [EnumMember(Value = "success")]
     Success,
     [EnumMember(Value = "failure")]
diff --git a/src/Octokit.Webhooks/Models/CheckRunEvent/CheckRunStatus.cs b/src/Octokit.Webhooks/Models/CheckRunEvent/CheckRunStatus.cs
index 19a37a7f..10004172 100644
--- a/src/Octokit.Webhooks/Models/CheckRunEvent/CheckRunStatus.cs
+++ b/src/Octokit.Webhooks/Models/CheckRunEvent/CheckRunStatus.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.CheckRunEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum CheckRunStatus
 {
-    Unknown = -1,
     [EnumMember(Value = "requested")]
     Requested,
     [EnumMember(Value = "in_progress")]
diff --git a/src/Octokit.Webhooks/Models/CheckRunEvent/CheckSuite.cs b/src/Octokit.Webhooks/Models/CheckRunEvent/CheckSuite.cs
index 9bcebe1e..fc53cd79 100644
--- a/src/Octokit.Webhooks/Models/CheckRunEvent/CheckSuite.cs
+++ b/src/Octokit.Webhooks/Models/CheckRunEvent/CheckSuite.cs
@@ -16,10 +16,12 @@ public sealed record CheckSuite
     public string HeadSha { get; init; } = null!;
 
     [JsonPropertyName("status")]
-    public CheckSuiteStatus Status { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<CheckSuiteStatus>))]
+    public StringEnum<CheckSuiteStatus> Status { get; init; } = null!;
 
     [JsonPropertyName("conclusion")]
-    public CheckSuiteConclusion? Conclusion { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<CheckSuiteConclusion>))]
+    public StringEnum<CheckSuiteConclusion>? Conclusion { get; init; }
 
     [JsonPropertyName("url")]
     public string Url { get; init; } = null!;
diff --git a/src/Octokit.Webhooks/Models/CheckRunEvent/CheckSuiteConclusion.cs b/src/Octokit.Webhooks/Models/CheckRunEvent/CheckSuiteConclusion.cs
index 1e6b8fee..01c6c2b3 100644
--- a/src/Octokit.Webhooks/Models/CheckRunEvent/CheckSuiteConclusion.cs
+++ b/src/Octokit.Webhooks/Models/CheckRunEvent/CheckSuiteConclusion.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.CheckRunEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum CheckSuiteConclusion
 {
-    Unknown = -1,
     [EnumMember(Value = "success")]
     Success,
     [EnumMember(Value = "failure")]
diff --git a/src/Octokit.Webhooks/Models/CheckRunEvent/CheckSuiteStatus.cs b/src/Octokit.Webhooks/Models/CheckRunEvent/CheckSuiteStatus.cs
index f9be12dd..4b33e0b6 100644
--- a/src/Octokit.Webhooks/Models/CheckRunEvent/CheckSuiteStatus.cs
+++ b/src/Octokit.Webhooks/Models/CheckRunEvent/CheckSuiteStatus.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.CheckRunEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum CheckSuiteStatus
 {
-    Unknown = -1,
     [EnumMember(Value = "queued")]
     Queued,
     [EnumMember(Value = "in_progress")]
diff --git a/src/Octokit.Webhooks/Models/CheckSuiteEvent/CheckSuite.cs b/src/Octokit.Webhooks/Models/CheckSuiteEvent/CheckSuite.cs
index 81388401..e7653d92 100644
--- a/src/Octokit.Webhooks/Models/CheckSuiteEvent/CheckSuite.cs
+++ b/src/Octokit.Webhooks/Models/CheckSuiteEvent/CheckSuite.cs
@@ -18,10 +18,12 @@ public sealed record CheckSuite
     public string HeadSha { get; init; } = null!;
 
     [JsonPropertyName("status")]
-    public CheckSuiteStatus? Status { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<CheckSuiteStatus>))]
+    public StringEnum<CheckSuiteStatus>? Status { get; init; }
 
     [JsonPropertyName("conclusion")]
-    public CheckSuiteConclusion? Conclusion { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<CheckSuiteConclusion>))]
+    public StringEnum<CheckSuiteConclusion>? Conclusion { get; init; }
 
     [JsonPropertyName("url")]
     public string Url { get; init; } = null!;
diff --git a/src/Octokit.Webhooks/Models/CheckSuiteEvent/CheckSuiteConclusion.cs b/src/Octokit.Webhooks/Models/CheckSuiteEvent/CheckSuiteConclusion.cs
index 891da78f..973d1c10 100644
--- a/src/Octokit.Webhooks/Models/CheckSuiteEvent/CheckSuiteConclusion.cs
+++ b/src/Octokit.Webhooks/Models/CheckSuiteEvent/CheckSuiteConclusion.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.CheckSuiteEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum CheckSuiteConclusion
 {
-    Unknown = -1,
     [EnumMember(Value = "success")]
     Success,
     [EnumMember(Value = "failure")]
diff --git a/src/Octokit.Webhooks/Models/CheckSuiteEvent/CheckSuiteStatus.cs b/src/Octokit.Webhooks/Models/CheckSuiteEvent/CheckSuiteStatus.cs
index 161b1405..2c4d0338 100644
--- a/src/Octokit.Webhooks/Models/CheckSuiteEvent/CheckSuiteStatus.cs
+++ b/src/Octokit.Webhooks/Models/CheckSuiteEvent/CheckSuiteStatus.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.CheckSuiteEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum CheckSuiteStatus
 {
-    Unknown = -1,
     [EnumMember(Value = "requested")]
     Requested,
     [EnumMember(Value = "in_progress")]
diff --git a/src/Octokit.Webhooks/Models/CodeScanningAlertEvent/Alert.cs b/src/Octokit.Webhooks/Models/CodeScanningAlertEvent/Alert.cs
index 15776227..d4a0ff9b 100644
--- a/src/Octokit.Webhooks/Models/CodeScanningAlertEvent/Alert.cs
+++ b/src/Octokit.Webhooks/Models/CodeScanningAlertEvent/Alert.cs
@@ -23,7 +23,8 @@ public sealed record Alert
     public AlertInstance AlertInstance { get; init; } = null!;
 
     [JsonPropertyName("state")]
-    public AlertState State { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AlertState>))]
+    public StringEnum<AlertState> State { get; init; } = null!;
 
     [JsonPropertyName("dismissed_by")]
     public User? DismissedBy { get; init; }
@@ -33,7 +34,8 @@ public sealed record Alert
     public DateTimeOffset? DismissedAt { get; init; }
 
     [JsonPropertyName("dismissed_reason")]
-    public DismissedReason? DismissedReason { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<DismissedReason>))]
+    public StringEnum<DismissedReason>? DismissedReason { get; init; }
 
     [JsonPropertyName("rule")]
     public AlertRule? Rule { get; init; }
diff --git a/src/Octokit.Webhooks/Models/CodeScanningAlertEvent/AlertInstance.cs b/src/Octokit.Webhooks/Models/CodeScanningAlertEvent/AlertInstance.cs
index 00058665..a8e97422 100644
--- a/src/Octokit.Webhooks/Models/CodeScanningAlertEvent/AlertInstance.cs
+++ b/src/Octokit.Webhooks/Models/CodeScanningAlertEvent/AlertInstance.cs
@@ -13,7 +13,8 @@ public sealed record AlertInstance
     public string Environment { get; init; } = null!;
 
     [JsonPropertyName("state")]
-    public AlertState State { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AlertState>))]
+    public StringEnum<AlertState> State { get; init; } = null!;
 
     [JsonPropertyName("commit_sha")]
     public string? CommitSha { get; init; }
diff --git a/src/Octokit.Webhooks/Models/CodeScanningAlertEvent/AlertRule.cs b/src/Octokit.Webhooks/Models/CodeScanningAlertEvent/AlertRule.cs
index 30128e1c..2f7728d0 100644
--- a/src/Octokit.Webhooks/Models/CodeScanningAlertEvent/AlertRule.cs
+++ b/src/Octokit.Webhooks/Models/CodeScanningAlertEvent/AlertRule.cs
@@ -7,7 +7,8 @@ public sealed record AlertRule
     public string Id { get; init; } = null!;
 
     [JsonPropertyName("severity")]
-    public AlertRuleSeverity? Severity { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AlertRuleSeverity>))]
+    public StringEnum<AlertRuleSeverity>? Severity { get; init; }
 
     [JsonPropertyName("description")]
     public string Description { get; init; } = null!;
diff --git a/src/Octokit.Webhooks/Models/CodeScanningAlertEvent/AlertRuleSeverity.cs b/src/Octokit.Webhooks/Models/CodeScanningAlertEvent/AlertRuleSeverity.cs
index efd57991..e8fc1fae 100644
--- a/src/Octokit.Webhooks/Models/CodeScanningAlertEvent/AlertRuleSeverity.cs
+++ b/src/Octokit.Webhooks/Models/CodeScanningAlertEvent/AlertRuleSeverity.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.CodeScanningAlertEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum AlertRuleSeverity
 {
-    Unknown = -1,
     [EnumMember(Value = "none")]
     Open,
     [EnumMember(Value = "note")]
diff --git a/src/Octokit.Webhooks/Models/CodeScanningAlertEvent/AlertState.cs b/src/Octokit.Webhooks/Models/CodeScanningAlertEvent/AlertState.cs
index 5f69364b..be523b9d 100644
--- a/src/Octokit.Webhooks/Models/CodeScanningAlertEvent/AlertState.cs
+++ b/src/Octokit.Webhooks/Models/CodeScanningAlertEvent/AlertState.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.CodeScanningAlertEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum AlertState
 {
-    Unknown = -1,
     [EnumMember(Value = "open")]
     Open,
     [EnumMember(Value = "dismissed")]
diff --git a/src/Octokit.Webhooks/Models/CodeScanningAlertEvent/DismissedReason.cs b/src/Octokit.Webhooks/Models/CodeScanningAlertEvent/DismissedReason.cs
index caefc700..345b9d7f 100644
--- a/src/Octokit.Webhooks/Models/CodeScanningAlertEvent/DismissedReason.cs
+++ b/src/Octokit.Webhooks/Models/CodeScanningAlertEvent/DismissedReason.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.CodeScanningAlertEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum DismissedReason
 {
-    Unknown = -1,
     [EnumMember(Value = "false positive")]
     FalsePositive,
     [EnumMember(Value = "won't fix")]
diff --git a/src/Octokit.Webhooks/Models/CommitCommentEvent/Comment.cs b/src/Octokit.Webhooks/Models/CommitCommentEvent/Comment.cs
index 279801fa..9bea256d 100644
--- a/src/Octokit.Webhooks/Models/CommitCommentEvent/Comment.cs
+++ b/src/Octokit.Webhooks/Models/CommitCommentEvent/Comment.cs
@@ -39,7 +39,8 @@ public sealed record Comment
     public DateTimeOffset UpdatedAt { get; init; }
 
     [JsonPropertyName("author_association")]
-    public AuthorAssociation AuthorAssociation { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AuthorAssociation>))]
+    public StringEnum<AuthorAssociation> AuthorAssociation { get; init; } = null!;
 
     [JsonPropertyName("body")]
     public string Body { get; init; } = null!;
diff --git a/src/Octokit.Webhooks/Models/DeploymentEvent/DeploymentCheckRun.cs b/src/Octokit.Webhooks/Models/DeploymentEvent/DeploymentCheckRun.cs
index e3d29ee7..3b3985e3 100644
--- a/src/Octokit.Webhooks/Models/DeploymentEvent/DeploymentCheckRun.cs
+++ b/src/Octokit.Webhooks/Models/DeploymentEvent/DeploymentCheckRun.cs
@@ -28,10 +28,12 @@ public sealed record DeploymentCheckRun
     public string DetailsUrl { get; init; } = null!;
 
     [JsonPropertyName("status")]
-    public DeploymentCheckRunStatus Status { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<DeploymentCheckRunStatus>))]
+    public StringEnum<DeploymentCheckRunStatus> Status { get; init; } = null!;
 
     [JsonPropertyName("conclusion")]
-    public DeploymentCheckRunConclusion? Conclusion { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<DeploymentCheckRunConclusion>))]
+    public StringEnum<DeploymentCheckRunConclusion>? Conclusion { get; init; }
 
     [JsonPropertyName("started_at")]
     [JsonConverter(typeof(DateTimeOffsetConverter))]
diff --git a/src/Octokit.Webhooks/Models/DeploymentEvent/DeploymentCheckRunConclusion.cs b/src/Octokit.Webhooks/Models/DeploymentEvent/DeploymentCheckRunConclusion.cs
index bc2cc5e8..c85be1d5 100644
--- a/src/Octokit.Webhooks/Models/DeploymentEvent/DeploymentCheckRunConclusion.cs
+++ b/src/Octokit.Webhooks/Models/DeploymentEvent/DeploymentCheckRunConclusion.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.DeploymentEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum DeploymentCheckRunConclusion
 {
-    Unknown = -1,
     [EnumMember(Value = "success")]
     Success,
     [EnumMember(Value = "failure")]
diff --git a/src/Octokit.Webhooks/Models/DeploymentEvent/DeploymentCheckRunStatus.cs b/src/Octokit.Webhooks/Models/DeploymentEvent/DeploymentCheckRunStatus.cs
index 73274b62..c29b59fa 100644
--- a/src/Octokit.Webhooks/Models/DeploymentEvent/DeploymentCheckRunStatus.cs
+++ b/src/Octokit.Webhooks/Models/DeploymentEvent/DeploymentCheckRunStatus.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.DeploymentEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum DeploymentCheckRunStatus
 {
-    Unknown = -1,
     [EnumMember(Value = "requested")]
     Requested,
     [EnumMember(Value = "in_progress")]
diff --git a/src/Octokit.Webhooks/Models/DeploymentEvent/DeploymentWorkflowRun.cs b/src/Octokit.Webhooks/Models/DeploymentEvent/DeploymentWorkflowRun.cs
index 9ffc20ff..af3958ed 100644
--- a/src/Octokit.Webhooks/Models/DeploymentEvent/DeploymentWorkflowRun.cs
+++ b/src/Octokit.Webhooks/Models/DeploymentEvent/DeploymentWorkflowRun.cs
@@ -30,10 +30,12 @@ public sealed record DeploymentWorkflowRun
     public string Event { get; init; } = null!;
 
     [JsonPropertyName("status")]
-    public DeploymentWorkflowRunStatus? Status { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<DeploymentWorkflowRunStatus>))]
+    public StringEnum<DeploymentWorkflowRunStatus>? Status { get; init; }
 
     [JsonPropertyName("conclusion")]
-    public DeploymentWorkflowRunConclusion? Conclusion { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<DeploymentWorkflowRunConclusion>))]
+    public StringEnum<DeploymentWorkflowRunConclusion>? Conclusion { get; init; }
 
     [JsonPropertyName("workflow_id")]
     public long WorkflowId { get; init; }
diff --git a/src/Octokit.Webhooks/Models/DeploymentEvent/DeploymentWorkflowRunConclusion.cs b/src/Octokit.Webhooks/Models/DeploymentEvent/DeploymentWorkflowRunConclusion.cs
index 1484e5dd..cf9d0791 100644
--- a/src/Octokit.Webhooks/Models/DeploymentEvent/DeploymentWorkflowRunConclusion.cs
+++ b/src/Octokit.Webhooks/Models/DeploymentEvent/DeploymentWorkflowRunConclusion.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.DeploymentEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum DeploymentWorkflowRunConclusion
 {
-    Unknown = -1,
     [EnumMember(Value = "success")]
     Success,
     [EnumMember(Value = "failure")]
diff --git a/src/Octokit.Webhooks/Models/DeploymentEvent/DeploymentWorkflowRunStatus.cs b/src/Octokit.Webhooks/Models/DeploymentEvent/DeploymentWorkflowRunStatus.cs
index 70070cfb..b6340967 100644
--- a/src/Octokit.Webhooks/Models/DeploymentEvent/DeploymentWorkflowRunStatus.cs
+++ b/src/Octokit.Webhooks/Models/DeploymentEvent/DeploymentWorkflowRunStatus.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.DeploymentEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum DeploymentWorkflowRunStatus
 {
-    Unknown = -1,
     [EnumMember(Value = "requested")]
     Requested,
     [EnumMember(Value = "in_progress")]
diff --git a/src/Octokit.Webhooks/Models/DeploymentStatusEvent/DeploymentStatus.cs b/src/Octokit.Webhooks/Models/DeploymentStatusEvent/DeploymentStatus.cs
index 8866d0ac..9aafd192 100644
--- a/src/Octokit.Webhooks/Models/DeploymentStatusEvent/DeploymentStatus.cs
+++ b/src/Octokit.Webhooks/Models/DeploymentStatusEvent/DeploymentStatus.cs
@@ -13,7 +13,8 @@ public sealed record DeploymentStatus
     public string NodeId { get; init; } = null!;
 
     [JsonPropertyName("state")]
-    public DeploymentStatusState State { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<DeploymentStatusState>))]
+    public StringEnum<DeploymentStatusState> State { get; init; } = null!;
 
     [JsonPropertyName("creator")]
     public User Creator { get; init; } = null!;
diff --git a/src/Octokit.Webhooks/Models/DeploymentStatusEvent/DeploymentStatusState.cs b/src/Octokit.Webhooks/Models/DeploymentStatusEvent/DeploymentStatusState.cs
index c65d3aee..38aa1de1 100644
--- a/src/Octokit.Webhooks/Models/DeploymentStatusEvent/DeploymentStatusState.cs
+++ b/src/Octokit.Webhooks/Models/DeploymentStatusEvent/DeploymentStatusState.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.DeploymentStatusEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum DeploymentStatusState
 {
-    Unknown = -1,
     [EnumMember(Value = "pending")]
     Pending,
     [EnumMember(Value = "in_progress")]
diff --git a/src/Octokit.Webhooks/Models/Discussion.cs b/src/Octokit.Webhooks/Models/Discussion.cs
index 65ac9ff9..58813c31 100644
--- a/src/Octokit.Webhooks/Models/Discussion.cs
+++ b/src/Octokit.Webhooks/Models/Discussion.cs
@@ -38,7 +38,8 @@ public sealed record Discussion
     public User User { get; init; } = null!;
 
     [JsonPropertyName("state")]
-    public DiscussionState State { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<DiscussionState>))]
+    public StringEnum<DiscussionState> State { get; init; } = null!;
 
     [JsonPropertyName("locked")]
     public bool Locked { get; init; }
@@ -55,7 +56,8 @@ public sealed record Discussion
     public DateTimeOffset UpdatedAt { get; init; }
 
     [JsonPropertyName("author_association")]
-    public AuthorAssociation AuthorAssociation { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AuthorAssociation>))]
+    public StringEnum<AuthorAssociation> AuthorAssociation { get; init; } = null!;
 
     [JsonPropertyName("active_lock_reason")]
     public string? ActiveLockReason { get; init; }
diff --git a/src/Octokit.Webhooks/Models/DiscussionAnswer.cs b/src/Octokit.Webhooks/Models/DiscussionAnswer.cs
index 01190858..485a2b24 100644
--- a/src/Octokit.Webhooks/Models/DiscussionAnswer.cs
+++ b/src/Octokit.Webhooks/Models/DiscussionAnswer.cs
@@ -25,7 +25,8 @@ public sealed record DiscussionAnswer
     public long DiscussionId { get; init; }
 
     [JsonPropertyName("author_association")]
-    public AuthorAssociation AuthorAssociation { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AuthorAssociation>))]
+    public StringEnum<AuthorAssociation> AuthorAssociation { get; init; } = null!;
 
     [JsonPropertyName("user")]
     public User User { get; init; } = null!;
diff --git a/src/Octokit.Webhooks/Models/DiscussionCommentEvent/DiscussionComment.cs b/src/Octokit.Webhooks/Models/DiscussionCommentEvent/DiscussionComment.cs
index fd787a50..7bfb0bf3 100644
--- a/src/Octokit.Webhooks/Models/DiscussionCommentEvent/DiscussionComment.cs
+++ b/src/Octokit.Webhooks/Models/DiscussionCommentEvent/DiscussionComment.cs
@@ -25,7 +25,8 @@ public sealed record DiscussionComment
     public long DiscussionId { get; init; }
 
     [JsonPropertyName("author_association")]
-    public AuthorAssociation AuthorAssociation { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AuthorAssociation>))]
+    public StringEnum<AuthorAssociation> AuthorAssociation { get; init; } = null!;
 
     [JsonPropertyName("user")]
     public User User { get; init; } = null!;
diff --git a/src/Octokit.Webhooks/Models/DiscussionState.cs b/src/Octokit.Webhooks/Models/DiscussionState.cs
index 56d53b12..646e00ab 100644
--- a/src/Octokit.Webhooks/Models/DiscussionState.cs
+++ b/src/Octokit.Webhooks/Models/DiscussionState.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum DiscussionState
 {
-    Unknown = -1,
     [EnumMember(Value = "open")]
     Open,
     [EnumMember(Value = "locked")]
diff --git a/src/Octokit.Webhooks/Models/EnforcementLevel.cs b/src/Octokit.Webhooks/Models/EnforcementLevel.cs
index 48ef2dd8..7c686fcd 100644
--- a/src/Octokit.Webhooks/Models/EnforcementLevel.cs
+++ b/src/Octokit.Webhooks/Models/EnforcementLevel.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum EnforcementLevel
 {
-    Unknown = -1,
     [EnumMember(Value = "off")]
     Off,
     [EnumMember(Value = "non_admins")]
diff --git a/src/Octokit.Webhooks/Models/GollumEvent/Page.cs b/src/Octokit.Webhooks/Models/GollumEvent/Page.cs
index 3c65feb0..125da2e7 100644
--- a/src/Octokit.Webhooks/Models/GollumEvent/Page.cs
+++ b/src/Octokit.Webhooks/Models/GollumEvent/Page.cs
@@ -13,7 +13,8 @@ public sealed record Page
     public string? Summary { get; init; }
 
     [JsonPropertyName("action")]
-    public PageAction Action { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<PageAction>))]
+    public StringEnum<PageAction> Action { get; init; } = null!;
 
     [JsonPropertyName("sha")]
     public string Sha { get; init; } = null!;
diff --git a/src/Octokit.Webhooks/Models/GollumEvent/PageAction.cs b/src/Octokit.Webhooks/Models/GollumEvent/PageAction.cs
index d216da77..4174f454 100644
--- a/src/Octokit.Webhooks/Models/GollumEvent/PageAction.cs
+++ b/src/Octokit.Webhooks/Models/GollumEvent/PageAction.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.GollumEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum PageAction
 {
-    Unknown = -1,
     [EnumMember(Value = "created")]
     Created,
     [EnumMember(Value = "edited")]
diff --git a/src/Octokit.Webhooks/Models/Installation.cs b/src/Octokit.Webhooks/Models/Installation.cs
index 4f69b169..4bd11ab5 100644
--- a/src/Octokit.Webhooks/Models/Installation.cs
+++ b/src/Octokit.Webhooks/Models/Installation.cs
@@ -10,7 +10,8 @@ public sealed record Installation
     public User Account { get; init; } = null!;
 
     [JsonPropertyName("repository_selection")]
-    public InstallationRepositorySelection RepositorySelection { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<InstallationRepositorySelection>))]
+    public StringEnum<InstallationRepositorySelection> RepositorySelection { get; init; } = null!;
 
     [JsonPropertyName("access_tokens_url")]
     public string AccessTokensUrl { get; init; } = null!;
@@ -31,13 +32,15 @@ public sealed record Installation
     public long TargetId { get; init; }
 
     [JsonPropertyName("target_type")]
-    public InstallationTargetType TargetType { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<InstallationTargetType>))]
+    public StringEnum<InstallationTargetType> TargetType { get; init; } = null!;
 
     [JsonPropertyName("permissions")]
     public AppPermissions? Permissions { get; init; }
 
     [JsonPropertyName("events")]
-    public IEnumerable<AppEvent>? Events { get; init; }
+    [JsonConverter(typeof(StringEnumEnumerableConverter<AppEvent>))]
+    public IEnumerable<StringEnum<AppEvent>>? Events { get; init; }
 
     [JsonPropertyName("created_at")]
     [JsonConverter(typeof(NullableDateTimeOffsetConverter))]
diff --git a/src/Octokit.Webhooks/Models/InstallationRepositorySelection.cs b/src/Octokit.Webhooks/Models/InstallationRepositorySelection.cs
index 640b0194..e53039a9 100644
--- a/src/Octokit.Webhooks/Models/InstallationRepositorySelection.cs
+++ b/src/Octokit.Webhooks/Models/InstallationRepositorySelection.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum InstallationRepositorySelection
 {
-    Unknown = -1,
     [EnumMember(Value = "all")]
     All,
     [EnumMember(Value = "selected")]
diff --git a/src/Octokit.Webhooks/Models/InstallationTargetType.cs b/src/Octokit.Webhooks/Models/InstallationTargetType.cs
index ccd43888..670160ee 100644
--- a/src/Octokit.Webhooks/Models/InstallationTargetType.cs
+++ b/src/Octokit.Webhooks/Models/InstallationTargetType.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum InstallationTargetType
 {
-    Unknown = -1,
     [EnumMember(Value = "User")]
     User,
     [EnumMember(Value = "Organization")]
diff --git a/src/Octokit.Webhooks/Models/Issue.cs b/src/Octokit.Webhooks/Models/Issue.cs
index 6edba2e9..1ce40ccf 100644
--- a/src/Octokit.Webhooks/Models/Issue.cs
+++ b/src/Octokit.Webhooks/Models/Issue.cs
@@ -40,7 +40,8 @@ public sealed record Issue
     public IEnumerable<Label> Labels { get; init; } = null!;
 
     [JsonPropertyName("state")]
-    public IssueState? State { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<IssueState>))]
+    public StringEnum<IssueState>? State { get; init; }
 
     [JsonPropertyName("locked")]
     public bool? Locked { get; init; }
@@ -70,10 +71,12 @@ public sealed record Issue
     public DateTimeOffset? ClosedAt { get; init; }
 
     [JsonPropertyName("author_association")]
-    public AuthorAssociation AuthorAssociation { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AuthorAssociation>))]
+    public StringEnum<AuthorAssociation> AuthorAssociation { get; init; } = null!;
 
     [JsonPropertyName("active_lock_reason")]
-    public ActiveLockReason? ActiveLockReason { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<ActiveLockReason>))]
+    public StringEnum<ActiveLockReason>? ActiveLockReason { get; init; }
 
     [JsonPropertyName("performed_via_github_app")]
     public App? PerformedViaGithubApp { get; init; }
diff --git a/src/Octokit.Webhooks/Models/IssueComment.cs b/src/Octokit.Webhooks/Models/IssueComment.cs
index 268d331d..616c27ee 100644
--- a/src/Octokit.Webhooks/Models/IssueComment.cs
+++ b/src/Octokit.Webhooks/Models/IssueComment.cs
@@ -30,7 +30,8 @@ public sealed record IssueComment
     public DateTimeOffset UpdatedAt { get; init; }
 
     [JsonPropertyName("author_association")]
-    public AuthorAssociation AuthorAssociation { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AuthorAssociation>))]
+    public StringEnum<AuthorAssociation> AuthorAssociation { get; init; } = null!;
 
     [JsonPropertyName("body")]
     public string Body { get; init; } = null!;
diff --git a/src/Octokit.Webhooks/Models/IssueState.cs b/src/Octokit.Webhooks/Models/IssueState.cs
index 9a7f0163..6f0e6f3a 100644
--- a/src/Octokit.Webhooks/Models/IssueState.cs
+++ b/src/Octokit.Webhooks/Models/IssueState.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum IssueState
 {
-    Unknown = -1,
     [EnumMember(Value = "open")]
     Open,
     [EnumMember(Value = "closed")]
diff --git a/src/Octokit.Webhooks/Models/MembershipAddedEvent/Scope.cs b/src/Octokit.Webhooks/Models/MembershipAddedEvent/Scope.cs
index 7f11e4a1..cfd07251 100644
--- a/src/Octokit.Webhooks/Models/MembershipAddedEvent/Scope.cs
+++ b/src/Octokit.Webhooks/Models/MembershipAddedEvent/Scope.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.MembershipAddedEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum Scope
 {
-    Unknown = -1,
     [EnumMember(Value = "team")]
     Team,
 }
diff --git a/src/Octokit.Webhooks/Models/MetaEvent/Hook.cs b/src/Octokit.Webhooks/Models/MetaEvent/Hook.cs
index 911a2950..4aa840f3 100644
--- a/src/Octokit.Webhooks/Models/MetaEvent/Hook.cs
+++ b/src/Octokit.Webhooks/Models/MetaEvent/Hook.cs
@@ -16,7 +16,8 @@ public sealed record Hook
     public bool Active { get; init; }
 
     [JsonPropertyName("events")]
-    public IEnumerable<AppEvent> Events { get; init; } = null!;
+    [JsonConverter(typeof(StringEnumEnumerableConverter<AppEvent>))]
+    public IEnumerable<StringEnum<AppEvent>> Events { get; init; } = null!;
 
     [JsonPropertyName("config")]
     public HookConfig Config { get; init; } = null!;
diff --git a/src/Octokit.Webhooks/Models/MetaEvent/HookConfig.cs b/src/Octokit.Webhooks/Models/MetaEvent/HookConfig.cs
index 330d9644..af2a0467 100644
--- a/src/Octokit.Webhooks/Models/MetaEvent/HookConfig.cs
+++ b/src/Octokit.Webhooks/Models/MetaEvent/HookConfig.cs
@@ -4,7 +4,8 @@
 public sealed record HookConfig
 {
     [JsonPropertyName("content_type")]
-    public HookConfigContentType ContentType { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<HookConfigContentType>))]
+    public StringEnum<HookConfigContentType> ContentType { get; init; } = null!;
 
     [JsonPropertyName("url")]
     public string Url { get; init; } = null!;
diff --git a/src/Octokit.Webhooks/Models/MetaEvent/HookConfigContentType.cs b/src/Octokit.Webhooks/Models/MetaEvent/HookConfigContentType.cs
index 5571a287..a67df3ab 100644
--- a/src/Octokit.Webhooks/Models/MetaEvent/HookConfigContentType.cs
+++ b/src/Octokit.Webhooks/Models/MetaEvent/HookConfigContentType.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.MetaEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum HookConfigContentType
 {
-    Unknown = -1,
     [EnumMember(Value = "json")]
     Json,
     [EnumMember(Value = "form")]
diff --git a/src/Octokit.Webhooks/Models/Milestone.cs b/src/Octokit.Webhooks/Models/Milestone.cs
index 3901dedc..dfe4a2e6 100644
--- a/src/Octokit.Webhooks/Models/Milestone.cs
+++ b/src/Octokit.Webhooks/Models/Milestone.cs
@@ -37,7 +37,8 @@ public sealed record Milestone
     public long ClosedIssues { get; init; }
 
     [JsonPropertyName("state")]
-    public MilestoneState State { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<MilestoneState>))]
+    public StringEnum<MilestoneState> State { get; init; } = null!;
 
     [JsonPropertyName("created_at")]
     [JsonConverter(typeof(DateTimeOffsetConverter))]
diff --git a/src/Octokit.Webhooks/Models/MilestoneState.cs b/src/Octokit.Webhooks/Models/MilestoneState.cs
index a7c7f2f6..56d649ef 100644
--- a/src/Octokit.Webhooks/Models/MilestoneState.cs
+++ b/src/Octokit.Webhooks/Models/MilestoneState.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum MilestoneState
 {
-    Unknown = -1,
     [EnumMember(Value = "open")]
     Open,
     [EnumMember(Value = "closed")]
diff --git a/src/Octokit.Webhooks/Models/PingEvent/Hook.cs b/src/Octokit.Webhooks/Models/PingEvent/Hook.cs
index 1b6201cb..bd283280 100644
--- a/src/Octokit.Webhooks/Models/PingEvent/Hook.cs
+++ b/src/Octokit.Webhooks/Models/PingEvent/Hook.cs
@@ -4,7 +4,8 @@ namespace Octokit.Webhooks.Models.PingEvent;
 public sealed record Hook
 {
     [JsonPropertyName("type")]
-    public HookType Type { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<HookType>))]
+    public StringEnum<HookType> Type { get; init; } = null!;
 
     [JsonPropertyName("id")]
     public long Id { get; init; }
@@ -19,7 +20,8 @@ public sealed record Hook
     public int? AppId { get; init; }
 
     [JsonPropertyName("events")]
-    public IEnumerable<AppEvent> Events { get; init; } = null!;
+    [JsonConverter(typeof(StringEnumEnumerableConverter<AppEvent>))]
+    public IEnumerable<StringEnum<AppEvent>> Events { get; init; } = null!;
 
     [JsonPropertyName("config")]
     public HookConfig Config { get; init; } = null!;
diff --git a/src/Octokit.Webhooks/Models/PingEvent/HookConfig.cs b/src/Octokit.Webhooks/Models/PingEvent/HookConfig.cs
index 33136d5c..6e634457 100644
--- a/src/Octokit.Webhooks/Models/PingEvent/HookConfig.cs
+++ b/src/Octokit.Webhooks/Models/PingEvent/HookConfig.cs
@@ -4,7 +4,8 @@
 public sealed record HookConfig
 {
     [JsonPropertyName("content_type")]
-    public HookConfigContentType ContentType { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<HookConfigContentType>))]
+    public StringEnum<HookConfigContentType> ContentType { get; init; } = null!;
 
     [JsonPropertyName("secret")]
     public string? Secret { get; init; }
diff --git a/src/Octokit.Webhooks/Models/PingEvent/HookConfigContentType.cs b/src/Octokit.Webhooks/Models/PingEvent/HookConfigContentType.cs
index 794c6f22..11f73c31 100644
--- a/src/Octokit.Webhooks/Models/PingEvent/HookConfigContentType.cs
+++ b/src/Octokit.Webhooks/Models/PingEvent/HookConfigContentType.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.PingEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum HookConfigContentType
 {
-    Unknown = -1,
     [EnumMember(Value = "json")]
     Json,
     [EnumMember(Value = "form")]
diff --git a/src/Octokit.Webhooks/Models/PingEvent/HookType.cs b/src/Octokit.Webhooks/Models/PingEvent/HookType.cs
index cb88cc67..34e94ab7 100644
--- a/src/Octokit.Webhooks/Models/PingEvent/HookType.cs
+++ b/src/Octokit.Webhooks/Models/PingEvent/HookType.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.PingEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum HookType
 {
-    Unknown = -1,
     [EnumMember(Value = "Repository")]
     Repository,
     [EnumMember(Value = "Organization")]
diff --git a/src/Octokit.Webhooks/Models/Project.cs b/src/Octokit.Webhooks/Models/Project.cs
index ab456d64..33e2711f 100644
--- a/src/Octokit.Webhooks/Models/Project.cs
+++ b/src/Octokit.Webhooks/Models/Project.cs
@@ -31,7 +31,8 @@ public sealed record Project
     public long Number { get; init; }
 
     [JsonPropertyName("state")]
-    public ProjectState State { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<ProjectState>))]
+    public StringEnum<ProjectState> State { get; init; } = null!;
 
     [JsonPropertyName("creator")]
     public User Creator { get; init; } = null!;
diff --git a/src/Octokit.Webhooks/Models/ProjectState.cs b/src/Octokit.Webhooks/Models/ProjectState.cs
index 838f1acb..efc12abb 100644
--- a/src/Octokit.Webhooks/Models/ProjectState.cs
+++ b/src/Octokit.Webhooks/Models/ProjectState.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum ProjectState
 {
-    Unknown = -1,
     [EnumMember(Value = "open")]
     Open,
     [EnumMember(Value = "closed")]
diff --git a/src/Octokit.Webhooks/Models/ProjectsV2Item.cs b/src/Octokit.Webhooks/Models/ProjectsV2Item.cs
index 69f07e61..8a42ddb5 100644
--- a/src/Octokit.Webhooks/Models/ProjectsV2Item.cs
+++ b/src/Octokit.Webhooks/Models/ProjectsV2Item.cs
@@ -16,7 +16,8 @@ public sealed record ProjectsV2Item
     public string ContentNodeId { get; init; } = null!;
 
     [JsonPropertyName("content_type")]
-    public ProjectsV2ItemContentType ContentType { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<ProjectsV2ItemContentType>))]
+    public StringEnum<ProjectsV2ItemContentType> ContentType { get; init; } = null!;
 
     [JsonPropertyName("creator")]
     public User Creator { get; init; } = null!;
diff --git a/src/Octokit.Webhooks/Models/ProjectsV2ItemContentType.cs b/src/Octokit.Webhooks/Models/ProjectsV2ItemContentType.cs
index 3b9606cf..26db5b45 100644
--- a/src/Octokit.Webhooks/Models/ProjectsV2ItemContentType.cs
+++ b/src/Octokit.Webhooks/Models/ProjectsV2ItemContentType.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum ProjectsV2ItemContentType
 {
-    Unknown = -1,
     [EnumMember(Value = "DraftIssue")]
     DraftIssue,
     [EnumMember(Value = "Issue")]
diff --git a/src/Octokit.Webhooks/Models/ProjectsV2ItemEvent/ChangesContentType.cs b/src/Octokit.Webhooks/Models/ProjectsV2ItemEvent/ChangesContentType.cs
index 020cef25..b470d798 100644
--- a/src/Octokit.Webhooks/Models/ProjectsV2ItemEvent/ChangesContentType.cs
+++ b/src/Octokit.Webhooks/Models/ProjectsV2ItemEvent/ChangesContentType.cs
@@ -4,8 +4,10 @@ namespace Octokit.Webhooks.Models.ProjectsV2ItemEvent;
 public sealed record ChangesContentType
 {
     [JsonPropertyName("from")]
-    public ProjectsV2ItemContentType From { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<ProjectsV2ItemContentType>))]
+    public StringEnum<ProjectsV2ItemContentType> From { get; init; } = null!;
 
     [JsonPropertyName("to")]
-    public ProjectsV2ItemContentType To { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<ProjectsV2ItemContentType>))]
+    public StringEnum<ProjectsV2ItemContentType> To { get; init; } = null!;
 }
diff --git a/src/Octokit.Webhooks/Models/ProjectsV2ItemEvent/ChangesFieldValue.cs b/src/Octokit.Webhooks/Models/ProjectsV2ItemEvent/ChangesFieldValue.cs
index 9a09ca9c..bc681dbb 100644
--- a/src/Octokit.Webhooks/Models/ProjectsV2ItemEvent/ChangesFieldValue.cs
+++ b/src/Octokit.Webhooks/Models/ProjectsV2ItemEvent/ChangesFieldValue.cs
@@ -4,7 +4,8 @@ namespace Octokit.Webhooks.Models.ProjectsV2ItemEvent;
 public sealed record ChangesFieldValue
 {
     [JsonPropertyName("field_type")]
-    public FieldType FieldType { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<FieldType>))]
+    public StringEnum<FieldType> FieldType { get; init; } = null!;
 
     [JsonPropertyName("field_node_id")]
     public string FieldNodeId { get; init; } = null!;
diff --git a/src/Octokit.Webhooks/Models/ProjectsV2ItemEvent/FieldType.cs b/src/Octokit.Webhooks/Models/ProjectsV2ItemEvent/FieldType.cs
index 6a6fb8ad..b7dea6d0 100644
--- a/src/Octokit.Webhooks/Models/ProjectsV2ItemEvent/FieldType.cs
+++ b/src/Octokit.Webhooks/Models/ProjectsV2ItemEvent/FieldType.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.ProjectsV2ItemEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum FieldType
 {
-    Unknown = -1,
     [EnumMember(Value = "single_select")]
     SingleSelect,
     [EnumMember(Value = "date")]
diff --git a/src/Octokit.Webhooks/Models/PullRequestEvent/PullRequest.cs b/src/Octokit.Webhooks/Models/PullRequestEvent/PullRequest.cs
index 12021e0e..a33df304 100644
--- a/src/Octokit.Webhooks/Models/PullRequestEvent/PullRequest.cs
+++ b/src/Octokit.Webhooks/Models/PullRequestEvent/PullRequest.cs
@@ -31,7 +31,8 @@ public sealed record PullRequest
     public long Number { get; init; }
 
     [JsonPropertyName("state")]
-    public PullRequestState State { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<PullRequestState>))]
+    public StringEnum<PullRequestState> State { get; init; } = null!;
 
     [JsonPropertyName("locked")]
     public bool Locked { get; init; }
@@ -104,13 +105,15 @@ public sealed record PullRequest
     public PullRequestLinks Links { get; init; } = null!;
 
     [JsonPropertyName("author_association")]
-    public AuthorAssociation AuthorAssociation { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AuthorAssociation>))]
+    public StringEnum<AuthorAssociation> AuthorAssociation { get; init; } = null!;
 
     [JsonPropertyName("auto_merge")]
     public PullRequestAutoMerge? AutoMerge { get; init; }
 
     [JsonPropertyName("active_lock_reason")]
-    public ActiveLockReason? ActiveLockReason { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<ActiveLockReason>))]
+    public StringEnum<ActiveLockReason>? ActiveLockReason { get; init; }
 
     [JsonPropertyName("draft")]
     public bool Draft { get; init; }
diff --git a/src/Octokit.Webhooks/Models/PullRequestEvent/PullRequestState.cs b/src/Octokit.Webhooks/Models/PullRequestEvent/PullRequestState.cs
index 97bf42b0..741a0f8b 100644
--- a/src/Octokit.Webhooks/Models/PullRequestEvent/PullRequestState.cs
+++ b/src/Octokit.Webhooks/Models/PullRequestEvent/PullRequestState.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.PullRequestEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum PullRequestState
 {
-    Unknown = -1,
     [EnumMember(Value = "open")]
     Open,
     [EnumMember(Value = "closed")]
diff --git a/src/Octokit.Webhooks/Models/PullRequestReviewComment.cs b/src/Octokit.Webhooks/Models/PullRequestReviewComment.cs
index cb218469..9b08d699 100644
--- a/src/Octokit.Webhooks/Models/PullRequestReviewComment.cs
+++ b/src/Octokit.Webhooks/Models/PullRequestReviewComment.cs
@@ -54,7 +54,8 @@ public sealed record PullRequestReviewComment
     public string PullRequestUrl { get; init; } = null!;
 
     [JsonPropertyName("author_association")]
-    public AuthorAssociation AuthorAssociation { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AuthorAssociation>))]
+    public StringEnum<AuthorAssociation> AuthorAssociation { get; init; } = null!;
 
     [JsonPropertyName("_links")]
     public PullRequestReviewCommentLinks Links { get; init; } = null!;
@@ -69,7 +70,8 @@ public sealed record PullRequestReviewComment
     public int? OriginalStartLine { get; init; }
 
     [JsonPropertyName("start_side")]
-    public Side? StartSide { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<Side>))]
+    public StringEnum<Side>? StartSide { get; init; }
 
     [JsonPropertyName("line")]
     public int? Line { get; init; }
@@ -78,7 +80,8 @@ public sealed record PullRequestReviewComment
     public long OriginalLine { get; init; }
 
     [JsonPropertyName("side")]
-    public Side Side { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<Side>))]
+    public StringEnum<Side> Side { get; init; } = null!;
 
     [JsonPropertyName("in_reply_to_id")]
     public int? InReplyToId { get; init; }
diff --git a/src/Octokit.Webhooks/Models/PullRequestReviewEvent/Review.cs b/src/Octokit.Webhooks/Models/PullRequestReviewEvent/Review.cs
index 7ceca16f..b31656fd 100644
--- a/src/Octokit.Webhooks/Models/PullRequestReviewEvent/Review.cs
+++ b/src/Octokit.Webhooks/Models/PullRequestReviewEvent/Review.cs
@@ -23,7 +23,8 @@ public sealed record Review
     public DateTimeOffset? SubmittedAt { get; init; }
 
     [JsonPropertyName("state")]
-    public ReviewState? State { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<ReviewState>))]
+    public StringEnum<ReviewState>? State { get; init; }
 
     [JsonPropertyName("html_url")]
     public string HtmlUrl { get; init; } = null!;
@@ -32,7 +33,8 @@ public sealed record Review
     public string PullRequestUrl { get; init; } = null!;
 
     [JsonPropertyName("author_association")]
-    public AuthorAssociation AuthorAssociation { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AuthorAssociation>))]
+    public StringEnum<AuthorAssociation> AuthorAssociation { get; init; } = null!;
 
     [JsonPropertyName("_links")]
     public ReviewLinks Links { get; init; } = null!;
diff --git a/src/Octokit.Webhooks/Models/PullRequestReviewEvent/ReviewState.cs b/src/Octokit.Webhooks/Models/PullRequestReviewEvent/ReviewState.cs
index 222e7c8e..aba5ca19 100644
--- a/src/Octokit.Webhooks/Models/PullRequestReviewEvent/ReviewState.cs
+++ b/src/Octokit.Webhooks/Models/PullRequestReviewEvent/ReviewState.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.PullRequestReviewEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum ReviewState
 {
-    Unknown = -1,
     [EnumMember(Value = "commented")]
     Commented,
     [EnumMember(Value = "changes_requested")]
diff --git a/src/Octokit.Webhooks/Models/RefType.cs b/src/Octokit.Webhooks/Models/RefType.cs
index bf63845c..ce328b7e 100644
--- a/src/Octokit.Webhooks/Models/RefType.cs
+++ b/src/Octokit.Webhooks/Models/RefType.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum RefType
 {
-    Unknown = -1,
     [EnumMember(Value = "tag")]
     Tag,
     [EnumMember(Value = "branch")]
diff --git a/src/Octokit.Webhooks/Models/ReleaseAsset.cs b/src/Octokit.Webhooks/Models/ReleaseAsset.cs
index 57737f68..7b874808 100644
--- a/src/Octokit.Webhooks/Models/ReleaseAsset.cs
+++ b/src/Octokit.Webhooks/Models/ReleaseAsset.cs
@@ -22,7 +22,8 @@ public sealed record ReleaseAsset
     public string? Label { get; init; }
 
     [JsonPropertyName("state")]
-    public ReleaseAssetState State { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<ReleaseAssetState>))]
+    public StringEnum<ReleaseAssetState> State { get; init; } = null!;
 
     [JsonPropertyName("content_type")]
     public string ContentType { get; init; } = null!;
diff --git a/src/Octokit.Webhooks/Models/ReleaseAssetState.cs b/src/Octokit.Webhooks/Models/ReleaseAssetState.cs
index 2886bfec..6aa0a878 100644
--- a/src/Octokit.Webhooks/Models/ReleaseAssetState.cs
+++ b/src/Octokit.Webhooks/Models/ReleaseAssetState.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum ReleaseAssetState
 {
-    Unknown = -1,
     [EnumMember(Value = "uploaded")]
     Uploaded,
 }
diff --git a/src/Octokit.Webhooks/Models/Repository.cs b/src/Octokit.Webhooks/Models/Repository.cs
index 89fd7461..dfbea190 100644
--- a/src/Octokit.Webhooks/Models/Repository.cs
+++ b/src/Octokit.Webhooks/Models/Repository.cs
@@ -259,7 +259,8 @@ public sealed record Repository
     public IEnumerable<string> Topics { get; init; } = null!;
 
     [JsonPropertyName("visibility")]
-    public RepositoryVisibility Visibility { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<RepositoryVisibility>))]
+    public StringEnum<RepositoryVisibility> Visibility { get; init; } = null!;
 
     [JsonPropertyName("delete_branch_on_merge")]
     public bool? DeleteBranchOnMerge { get; init; }
diff --git a/src/Octokit.Webhooks/Models/RepositoryImportEvent/Status.cs b/src/Octokit.Webhooks/Models/RepositoryImportEvent/Status.cs
index 22ad13e2..d8d7dbee 100644
--- a/src/Octokit.Webhooks/Models/RepositoryImportEvent/Status.cs
+++ b/src/Octokit.Webhooks/Models/RepositoryImportEvent/Status.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.RepositoryImportEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum Status
 {
-    Unknown = -1,
     [EnumMember(Value = "success")]
     Success,
     [EnumMember(Value = "cancelled")]
diff --git a/src/Octokit.Webhooks/Models/RepositoryVisibility.cs b/src/Octokit.Webhooks/Models/RepositoryVisibility.cs
index 5a30d913..3a231839 100644
--- a/src/Octokit.Webhooks/Models/RepositoryVisibility.cs
+++ b/src/Octokit.Webhooks/Models/RepositoryVisibility.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum RepositoryVisibility
 {
-    Unknown = -1,
     [EnumMember(Value = "public")]
     Public,
     [EnumMember(Value = "private")]
diff --git a/src/Octokit.Webhooks/Models/SecretScanningAlertEvent/Alert.cs b/src/Octokit.Webhooks/Models/SecretScanningAlertEvent/Alert.cs
index 80935d3a..7ade9aae 100644
--- a/src/Octokit.Webhooks/Models/SecretScanningAlertEvent/Alert.cs
+++ b/src/Octokit.Webhooks/Models/SecretScanningAlertEvent/Alert.cs
@@ -10,7 +10,8 @@ public sealed record Alert
     public string SecretType { get; init; } = null!;
 
     [JsonPropertyName("resolution")]
-    public AlertResolution? Resolution { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AlertResolution>))]
+    public StringEnum<AlertResolution>? Resolution { get; init; }
 
     [JsonPropertyName("resolved_by")]
     public User? ResolvedBy { get; init; }
diff --git a/src/Octokit.Webhooks/Models/SecretScanningAlertEvent/AlertResolution.cs b/src/Octokit.Webhooks/Models/SecretScanningAlertEvent/AlertResolution.cs
index 3cd881f4..a64405ca 100644
--- a/src/Octokit.Webhooks/Models/SecretScanningAlertEvent/AlertResolution.cs
+++ b/src/Octokit.Webhooks/Models/SecretScanningAlertEvent/AlertResolution.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.SecretScanningAlertEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum AlertResolution
 {
-    Unknown = -1,
     [EnumMember(Value = "false_positive")]
     FalsePositive,
     [EnumMember(Value = "wontfix")]
diff --git a/src/Octokit.Webhooks/Models/Side.cs b/src/Octokit.Webhooks/Models/Side.cs
index a7c9fe14..7a1f36e7 100644
--- a/src/Octokit.Webhooks/Models/Side.cs
+++ b/src/Octokit.Webhooks/Models/Side.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum Side
 {
-    Unknown = -1,
     [EnumMember(Value = "LEFT")]
     Left,
     [EnumMember(Value = "RIGHT")]
diff --git a/src/Octokit.Webhooks/Models/SimplePullRequest.cs b/src/Octokit.Webhooks/Models/SimplePullRequest.cs
index f78d3a66..2c43a68f 100644
--- a/src/Octokit.Webhooks/Models/SimplePullRequest.cs
+++ b/src/Octokit.Webhooks/Models/SimplePullRequest.cs
@@ -28,7 +28,8 @@ public sealed record SimplePullRequest
     public long Number { get; init; }
 
     [JsonPropertyName("state")]
-    public SimplePullRequestState State { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<SimplePullRequestState>))]
+    public StringEnum<SimplePullRequestState> State { get; init; } = null!;
 
     [JsonPropertyName("locked")]
     public bool Locked { get; init; }
@@ -107,11 +108,13 @@ public sealed record SimplePullRequest
     public SimplePullRequestLinks? Links { get; init; }
 
     [JsonPropertyName("author_association")]
-    public AuthorAssociation AuthorAssociation { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<AuthorAssociation>))]
+    public StringEnum<AuthorAssociation> AuthorAssociation { get; init; } = null!;
 
     [JsonPropertyName("auto_merge")]
     public PullRequestAutoMerge? AutoMerge { get; init; }
 
     [JsonPropertyName("active_lock_reason")]
-    public ActiveLockReason? ActiveLockReason { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<ActiveLockReason>))]
+    public StringEnum<ActiveLockReason>? ActiveLockReason { get; init; }
 }
diff --git a/src/Octokit.Webhooks/Models/SimplePullRequestState.cs b/src/Octokit.Webhooks/Models/SimplePullRequestState.cs
index d7a4e294..5d67e966 100644
--- a/src/Octokit.Webhooks/Models/SimplePullRequestState.cs
+++ b/src/Octokit.Webhooks/Models/SimplePullRequestState.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum SimplePullRequestState
 {
-    Unknown = -1,
     [EnumMember(Value = "open")]
     Open,
     [EnumMember(Value = "closed")]
diff --git a/src/Octokit.Webhooks/Models/StatusEvent/CommitVerification.cs b/src/Octokit.Webhooks/Models/StatusEvent/CommitVerification.cs
index 453403bf..32edaa5d 100644
--- a/src/Octokit.Webhooks/Models/StatusEvent/CommitVerification.cs
+++ b/src/Octokit.Webhooks/Models/StatusEvent/CommitVerification.cs
@@ -7,7 +7,8 @@ public sealed record CommitVerification
     public bool Verified { get; init; }
 
     [JsonPropertyName("reason")]
-    public CommitVerificationReason Reason { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<CommitVerificationReason>))]
+    public StringEnum<CommitVerificationReason> Reason { get; init; } = null!;
 
     [JsonPropertyName("signature")]
     public string? Signature { get; init; }
diff --git a/src/Octokit.Webhooks/Models/StatusEvent/CommitVerificationReason.cs b/src/Octokit.Webhooks/Models/StatusEvent/CommitVerificationReason.cs
index 9d12e348..8feee344 100644
--- a/src/Octokit.Webhooks/Models/StatusEvent/CommitVerificationReason.cs
+++ b/src/Octokit.Webhooks/Models/StatusEvent/CommitVerificationReason.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.StatusEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum CommitVerificationReason
 {
-    Unknown = -1,
     [EnumMember(Value = "expired_key")]
     ExpiredKey,
     [EnumMember(Value = "not_signing_key")]
diff --git a/src/Octokit.Webhooks/Models/StatusEvent/StatusState.cs b/src/Octokit.Webhooks/Models/StatusEvent/StatusState.cs
index 4a253f06..5a4cbae6 100644
--- a/src/Octokit.Webhooks/Models/StatusEvent/StatusState.cs
+++ b/src/Octokit.Webhooks/Models/StatusEvent/StatusState.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.StatusEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum StatusState
 {
-    Unknown = -1,
     [EnumMember(Value = "pending")]
     Pending,
     [EnumMember(Value = "success")]
diff --git a/src/Octokit.Webhooks/Models/Team.cs b/src/Octokit.Webhooks/Models/Team.cs
index 86124718..9157c7e5 100644
--- a/src/Octokit.Webhooks/Models/Team.cs
+++ b/src/Octokit.Webhooks/Models/Team.cs
@@ -19,7 +19,8 @@ public sealed record Team
     public string? Description { get; init; }
 
     [JsonPropertyName("privacy")]
-    public TeamPrivacy Privacy { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<TeamPrivacy>))]
+    public StringEnum<TeamPrivacy> Privacy { get; init; } = null!;
 
     [JsonPropertyName("url")]
     public string Url { get; init; } = null!;
diff --git a/src/Octokit.Webhooks/Models/TeamParent.cs b/src/Octokit.Webhooks/Models/TeamParent.cs
index 8c58663a..9832ef0d 100644
--- a/src/Octokit.Webhooks/Models/TeamParent.cs
+++ b/src/Octokit.Webhooks/Models/TeamParent.cs
@@ -19,7 +19,8 @@ public sealed record TeamParent
     public string Slug { get; init; } = null!;
 
     [JsonPropertyName("privacy")]
-    public TeamParentPrivacy Privacy { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<TeamParentPrivacy>))]
+    public StringEnum<TeamParentPrivacy> Privacy { get; init; } = null!;
 
     [JsonPropertyName("url")]
     public string Url { get; init; } = null!;
diff --git a/src/Octokit.Webhooks/Models/TeamParentPrivacy.cs b/src/Octokit.Webhooks/Models/TeamParentPrivacy.cs
index d2cc480a..d5345966 100644
--- a/src/Octokit.Webhooks/Models/TeamParentPrivacy.cs
+++ b/src/Octokit.Webhooks/Models/TeamParentPrivacy.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum TeamParentPrivacy
 {
-    Unknown = -1,
     [EnumMember(Value = "Open")]
     Open,
     [EnumMember(Value = "Closed")]
diff --git a/src/Octokit.Webhooks/Models/TeamPrivacy.cs b/src/Octokit.Webhooks/Models/TeamPrivacy.cs
index e27d7ac4..f9762400 100644
--- a/src/Octokit.Webhooks/Models/TeamPrivacy.cs
+++ b/src/Octokit.Webhooks/Models/TeamPrivacy.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum TeamPrivacy
 {
-    Unknown = -1,
     [EnumMember(Value = "Open")]
     Open,
     [EnumMember(Value = "Closed")]
diff --git a/src/Octokit.Webhooks/Models/User.cs b/src/Octokit.Webhooks/Models/User.cs
index 45cd6c09..aa2e6d7c 100644
--- a/src/Octokit.Webhooks/Models/User.cs
+++ b/src/Octokit.Webhooks/Models/User.cs
@@ -58,7 +58,8 @@ public sealed record User
     public string ReceivedEventsUrl { get; init; } = null!;
 
     [JsonPropertyName("type")]
-    public UserType Type { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<UserType>))]
+    public StringEnum<UserType> Type { get; init; } = null!;
 
     [JsonPropertyName("site_admin")]
     public bool SiteAdmin { get; init; }
diff --git a/src/Octokit.Webhooks/Models/UserType.cs b/src/Octokit.Webhooks/Models/UserType.cs
index cfb4492f..b556544c 100644
--- a/src/Octokit.Webhooks/Models/UserType.cs
+++ b/src/Octokit.Webhooks/Models/UserType.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum UserType
 {
-    Unknown = -1,
     [EnumMember(Value = "Bot")]
     Bot,
     [EnumMember(Value = "User")]
diff --git a/src/Octokit.Webhooks/Models/WorkflowJobEvent/WorkflowJob.cs b/src/Octokit.Webhooks/Models/WorkflowJobEvent/WorkflowJob.cs
index c8702d02..c18f6460 100644
--- a/src/Octokit.Webhooks/Models/WorkflowJobEvent/WorkflowJob.cs
+++ b/src/Octokit.Webhooks/Models/WorkflowJobEvent/WorkflowJob.cs
@@ -34,13 +34,15 @@ public sealed record WorkflowJob
     public string Url { get; init; } = null!;
 
     [JsonPropertyName("status")]
-    public WorkflowJobStatus Status { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<WorkflowJobStatus>))]
+    public StringEnum<WorkflowJobStatus> Status { get; init; } = null!;
 
     [JsonPropertyName("steps")]
     public IEnumerable<WorkflowJobStep> Steps { get; init; } = null!;
 
     [JsonPropertyName("conclusion")]
-    public WorkflowJobConclusion? Conclusion { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<WorkflowJobConclusion>))]
+    public StringEnum<WorkflowJobConclusion>? Conclusion { get; init; }
 
     [JsonPropertyName("labels")]
     public IEnumerable<string> Labels { get; init; } = null!;
diff --git a/src/Octokit.Webhooks/Models/WorkflowJobEvent/WorkflowJobConclusion.cs b/src/Octokit.Webhooks/Models/WorkflowJobEvent/WorkflowJobConclusion.cs
index 3a5a886e..98073c74 100644
--- a/src/Octokit.Webhooks/Models/WorkflowJobEvent/WorkflowJobConclusion.cs
+++ b/src/Octokit.Webhooks/Models/WorkflowJobEvent/WorkflowJobConclusion.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.WorkflowJobEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum WorkflowJobConclusion
 {
-    Unknown = -1,
     [EnumMember(Value = "success")]
     Success,
     [EnumMember(Value = "failure")]
diff --git a/src/Octokit.Webhooks/Models/WorkflowJobEvent/WorkflowJobStatus.cs b/src/Octokit.Webhooks/Models/WorkflowJobEvent/WorkflowJobStatus.cs
index 1d8aa130..5b6dcc55 100644
--- a/src/Octokit.Webhooks/Models/WorkflowJobEvent/WorkflowJobStatus.cs
+++ b/src/Octokit.Webhooks/Models/WorkflowJobEvent/WorkflowJobStatus.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.WorkflowJobEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum WorkflowJobStatus
 {
-    Unknown = -1,
     [EnumMember(Value = "queued")]
     Queued,
     [EnumMember(Value = "in_progress")]
diff --git a/src/Octokit.Webhooks/Models/WorkflowJobEvent/WorkflowJobStep.cs b/src/Octokit.Webhooks/Models/WorkflowJobEvent/WorkflowJobStep.cs
index fdf8b6e5..14b65051 100644
--- a/src/Octokit.Webhooks/Models/WorkflowJobEvent/WorkflowJobStep.cs
+++ b/src/Octokit.Webhooks/Models/WorkflowJobEvent/WorkflowJobStep.cs
@@ -7,10 +7,12 @@ public sealed record WorkflowJobStep
     public string Name { get; init; } = null!;
 
     [JsonPropertyName("status")]
-    public WorkflowJobStepStatus Status { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<WorkflowJobStepStatus>))]
+    public StringEnum<WorkflowJobStepStatus> Status { get; init; } = null!;
 
     [JsonPropertyName("conclusion")]
-    public WorkflowJobStepConclusion? Conclusion { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<WorkflowJobStepConclusion>))]
+    public StringEnum<WorkflowJobStepConclusion>? Conclusion { get; init; }
 
     [JsonPropertyName("number")]
     public long Number { get; init; }
diff --git a/src/Octokit.Webhooks/Models/WorkflowJobEvent/WorkflowJobStepConclusion.cs b/src/Octokit.Webhooks/Models/WorkflowJobEvent/WorkflowJobStepConclusion.cs
index 048ff691..95d02081 100644
--- a/src/Octokit.Webhooks/Models/WorkflowJobEvent/WorkflowJobStepConclusion.cs
+++ b/src/Octokit.Webhooks/Models/WorkflowJobEvent/WorkflowJobStepConclusion.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.WorkflowJobEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum WorkflowJobStepConclusion
 {
-    Unknown = -1,
     [EnumMember(Value = "failure")]
     Failure,
     [EnumMember(Value = "skipped")]
diff --git a/src/Octokit.Webhooks/Models/WorkflowJobEvent/WorkflowJobStepStatus.cs b/src/Octokit.Webhooks/Models/WorkflowJobEvent/WorkflowJobStepStatus.cs
index c598ffff..eafe2732 100644
--- a/src/Octokit.Webhooks/Models/WorkflowJobEvent/WorkflowJobStepStatus.cs
+++ b/src/Octokit.Webhooks/Models/WorkflowJobEvent/WorkflowJobStepStatus.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models.WorkflowJobEvent;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum WorkflowJobStepStatus
 {
-    Unknown = -1,
     [EnumMember(Value = "in_progress")]
     InProgress,
     [EnumMember(Value = "completed")]
diff --git a/src/Octokit.Webhooks/Models/WorkflowRun.cs b/src/Octokit.Webhooks/Models/WorkflowRun.cs
index bec66de5..d0e21fe6 100644
--- a/src/Octokit.Webhooks/Models/WorkflowRun.cs
+++ b/src/Octokit.Webhooks/Models/WorkflowRun.cs
@@ -19,7 +19,8 @@ public sealed record WorkflowRun
     public string CheckSuiteNodeId { get; init; } = null!;
 
     [JsonPropertyName("conclusion")]
-    public WorkflowRunConclusion? Conclusion { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<WorkflowRunConclusion>))]
+    public StringEnum<WorkflowRunConclusion>? Conclusion { get; init; }
 
     [JsonPropertyName("created_at")]
     [JsonConverter(typeof(DateTimeOffsetConverter))]
@@ -71,7 +72,8 @@ public sealed record WorkflowRun
     public long RunNumber { get; init; }
 
     [JsonPropertyName("status")]
-    public WorkflowRunStatus Status { get; init; }
+    [JsonConverter(typeof(StringEnumConverter<WorkflowRunStatus>))]
+    public StringEnum<WorkflowRunStatus> Status { get; init; } = null!;
 
     [JsonPropertyName("updated_at")]
     [JsonConverter(typeof(DateTimeOffsetConverter))]
diff --git a/src/Octokit.Webhooks/Models/WorkflowRunConclusion.cs b/src/Octokit.Webhooks/Models/WorkflowRunConclusion.cs
index b4262c96..72ef003b 100644
--- a/src/Octokit.Webhooks/Models/WorkflowRunConclusion.cs
+++ b/src/Octokit.Webhooks/Models/WorkflowRunConclusion.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum WorkflowRunConclusion
 {
-    Unknown = -1,
     [EnumMember(Value = "success")]
     Success,
     [EnumMember(Value = "failure")]
diff --git a/src/Octokit.Webhooks/Models/WorkflowRunStatus.cs b/src/Octokit.Webhooks/Models/WorkflowRunStatus.cs
index 23f890b2..c039b616 100644
--- a/src/Octokit.Webhooks/Models/WorkflowRunStatus.cs
+++ b/src/Octokit.Webhooks/Models/WorkflowRunStatus.cs
@@ -1,10 +1,8 @@
 namespace Octokit.Webhooks.Models;
 
 [PublicAPI]
-[JsonConverter(typeof(JsonStringEnumMemberConverterWithFallback))]
 public enum WorkflowRunStatus
 {
-    Unknown = -1,
     [EnumMember(Value = "requested")]
     Requested,
     [EnumMember(Value = "in_progress")]
diff --git a/src/Octokit.Webhooks/Properties/Usings.cs b/src/Octokit.Webhooks/Properties/Usings.cs
index 221f7adb..077e8561 100644
--- a/src/Octokit.Webhooks/Properties/Usings.cs
+++ b/src/Octokit.Webhooks/Properties/Usings.cs
@@ -6,4 +6,5 @@
 global using System.Text.Json.Serialization;
 global using JetBrains.Annotations;
 global using Octokit.Webhooks.Converter;
+global using Octokit.Webhooks.Extensions;
 global using Octokit.Webhooks.Models;
diff --git a/test/Octokit.Webhooks.Test/Converter/JsonStringEnumMemberConverterWithFallbackTests.cs b/test/Octokit.Webhooks.Test/Converter/JsonStringEnumMemberConverterWithFallbackTests.cs
deleted file mode 100644
index 8ae34256..00000000
--- a/test/Octokit.Webhooks.Test/Converter/JsonStringEnumMemberConverterWithFallbackTests.cs
+++ /dev/null
@@ -1,65 +0,0 @@
-namespace Octokit.Webhooks.Test.Converter;
-
-using System;
-using System.Globalization;
-using System.Reflection;
-using System.Text.Json;
-using System.Text.Json.Serialization;
-using FluentAssertions;
-using Octokit.Webhooks.Models.PingEvent;
-using Xunit;
-
-public class JsonStringEnumMemberConverterWithFallbackTests
-{
-    private readonly JsonSerializerOptions options = new()
-    {
-        Converters =
-        {
-            new JsonStringEnumMemberConverterWithFallback(),
-        },
-    };
-
-    [Theory]
-    [InlineData(@"""App""", HookType.App)]
-    [InlineData(@"""Organization""", HookType.Organization)]
-    [InlineData(@"""Repository""", HookType.Repository)]
-    [InlineData(@"""Foo""", HookType.Unknown)]
-    public void CanConvertString(string input, HookType expected)
-    {
-        var actual = JsonSerializer.Deserialize<HookType>(input, this.options);
-        actual.Should().Be(expected);
-    }
-
-    [Fact]
-    public void AllEnumerationsUseJsonStringEnumMemberConverterForJsonConverter()
-    {
-        var assembly = typeof(WebhookEvent).Assembly;
-        var types = assembly.GetTypes().ThatDeriveFrom<Enum>();
-
-        foreach (var type in types)
-        {
-            type.Should().BeDecoratedWith<JsonConverterAttribute>($"the {type.Name} enumeration must be decorated with [JsonConverter(...)]");
-
-            var converter = type.GetCustomAttribute<JsonConverterAttribute>();
-            converter.Should().NotBeNull();
-            converter!.ConverterType.Should().Be(typeof(JsonStringEnumMemberConverterWithFallback));
-        }
-    }
-
-    [Fact]
-    public void AllEnumerationsHaveUnknownMemberWithValueOfMinusOne()
-    {
-        var assembly = typeof(WebhookEvent).Assembly;
-        var types = assembly.GetTypes().ThatDeriveFrom<Enum>();
-
-        foreach (var type in types)
-        {
-            var names = Enum.GetNames(type);
-            names.Should().Contain("Unknown", $"the {type.Name} enumeration must contain an Unknown value");
-
-            var enumValue = Enum.Parse(type, "Unknown");
-            var intValue = Convert.ToInt32(enumValue, CultureInfo.InvariantCulture);
-            intValue.Should().Be(-1, $"the Unknown value of the {type.Name} enumeration must have a value of -1");
-        }
-    }
-}
diff --git a/test/Octokit.Webhooks.Test/Converter/StringEnumConverterTests.cs b/test/Octokit.Webhooks.Test/Converter/StringEnumConverterTests.cs
new file mode 100644
index 00000000..1a641126
--- /dev/null
+++ b/test/Octokit.Webhooks.Test/Converter/StringEnumConverterTests.cs
@@ -0,0 +1,40 @@
+namespace Octokit.Webhooks.Test.Converter;
+
+using System.Text.Json;
+using FluentAssertions;
+using Octokit.Webhooks.Converter;
+using Octokit.Webhooks.Extensions;
+using Octokit.Webhooks.Models.PingEvent;
+using Xunit;
+
+public class StringEnumConverterTests
+{
+    private readonly JsonSerializerOptions options = new()
+    {
+        Converters =
+        {
+            new StringEnumConverter<HookType>(),
+        },
+    };
+
+    [Theory]
+    [InlineData(@"""App""", HookType.App)]
+    [InlineData(@"""Repository""", HookType.Repository)]
+    [InlineData(@"""Organization""", HookType.Organization)]
+    public void CanDeserializeKnown(string input, HookType expected)
+    {
+        var result = JsonSerializer.Deserialize<StringEnum<HookType>>(input, this.options);
+        result!.Value.Should().Be(expected);
+    }
+
+    [Theory]
+    [InlineData(@"""App""", "App")]
+    [InlineData(@"""Repository""", "Repository")]
+    [InlineData(@"""Organization""", "Organization")]
+    [InlineData(@"""Unknown""", "Unknown")]
+    public void CanDeserializeUnknown(string input, string expected)
+    {
+        var result = JsonSerializer.Deserialize<StringEnum<HookType>>(input, this.options);
+        result!.StringValue.Should().Be(expected);
+    }
+}
diff --git a/test/Octokit.Webhooks.Test/Converter/StringEnumEnumerableConverterTests.cs b/test/Octokit.Webhooks.Test/Converter/StringEnumEnumerableConverterTests.cs
new file mode 100644
index 00000000..9f523dac
--- /dev/null
+++ b/test/Octokit.Webhooks.Test/Converter/StringEnumEnumerableConverterTests.cs
@@ -0,0 +1,37 @@
+namespace Octokit.Webhooks.Test.Converter;
+
+using System.Collections.Generic;
+using System.Linq;
+using System.Text.Json;
+using FluentAssertions;
+using Octokit.Webhooks.Converter;
+using Octokit.Webhooks.Extensions;
+using Octokit.Webhooks.Models.PingEvent;
+using Xunit;
+
+public class StringEnumEnumerableConverterTests
+{
+    private readonly JsonSerializerOptions options = new()
+    {
+        Converters =
+        {
+            new StringEnumEnumerableConverter<HookType>(),
+        },
+    };
+
+    [Theory]
+    [ClassData(typeof(StringEnumEnumerableConverterTestsKnownData))]
+    public void CanDeserializeKnown(string input, IEnumerable<StringEnum<HookType>> expected)
+    {
+        var result = JsonSerializer.Deserialize<IEnumerable<StringEnum<HookType>>>(input, this.options);
+        result.Should().BeEquivalentTo(expected);
+    }
+
+    [Theory]
+    [ClassData(typeof(StringEnumEnumerableConverterTestsUnknownData))]
+    public void CanDeserializeUnknown(string input, IEnumerable<StringEnum<HookType>> expected)
+    {
+        var result = JsonSerializer.Deserialize<IEnumerable<StringEnum<HookType>>>(input, this.options);
+        result!.Select(r => r.StringValue).Should().BeEquivalentTo(expected.Select(e => e.StringValue));
+    }
+}
diff --git a/test/Octokit.Webhooks.Test/Converter/StringEnumEnumerableConverterTestsKnownData.cs b/test/Octokit.Webhooks.Test/Converter/StringEnumEnumerableConverterTestsKnownData.cs
new file mode 100644
index 00000000..45a251ef
--- /dev/null
+++ b/test/Octokit.Webhooks.Test/Converter/StringEnumEnumerableConverterTestsKnownData.cs
@@ -0,0 +1,15 @@
+namespace Octokit.Webhooks.Test.Converter;
+
+using System.Collections.Generic;
+using Octokit.Webhooks.Extensions;
+using Octokit.Webhooks.Models.PingEvent;
+using Xunit;
+
+public class StringEnumEnumerableConverterTestsKnownData : TheoryData<string, IEnumerable<StringEnum<HookType>>>
+{
+    public StringEnumEnumerableConverterTestsKnownData() => this.Add(@"[""App"", ""Organization""]", new[]
+    {
+        new StringEnum<HookType>(HookType.App),
+        new StringEnum<HookType>(HookType.Organization),
+    });
+}
diff --git a/test/Octokit.Webhooks.Test/Converter/StringEnumEnumerableConverterTestsUnknownData.cs b/test/Octokit.Webhooks.Test/Converter/StringEnumEnumerableConverterTestsUnknownData.cs
new file mode 100644
index 00000000..e03c7165
--- /dev/null
+++ b/test/Octokit.Webhooks.Test/Converter/StringEnumEnumerableConverterTestsUnknownData.cs
@@ -0,0 +1,16 @@
+namespace Octokit.Webhooks.Test.Converter;
+
+using System.Collections.Generic;
+using Octokit.Webhooks.Extensions;
+using Octokit.Webhooks.Models.PingEvent;
+using Xunit;
+
+public class StringEnumEnumerableConverterTestsUnknownData : TheoryData<string, IEnumerable<StringEnum<HookType>>>
+{
+    public StringEnumEnumerableConverterTestsUnknownData() => this.Add(@"[""App"", ""Organization"", ""Unknown""]", new[]
+    {
+        new StringEnum<HookType>(HookType.App),
+        new StringEnum<HookType>(HookType.Organization),
+        new StringEnum<HookType>("Unknown"),
+    });
+}
diff --git a/test/Octokit.Webhooks.Test/Extensions/StringEnumTests.cs b/test/Octokit.Webhooks.Test/Extensions/StringEnumTests.cs
new file mode 100644
index 00000000..ee9b1a69
--- /dev/null
+++ b/test/Octokit.Webhooks.Test/Extensions/StringEnumTests.cs
@@ -0,0 +1,82 @@
+namespace Octokit.Webhooks.Test.Extensions;
+
+using System;
+using FluentAssertions;
+using Octokit.Webhooks.Extensions;
+using Octokit.Webhooks.Models.PingEvent;
+using Xunit;
+
+public class StringEnumTests
+{
+    [Theory]
+    [InlineData("App")]
+    [InlineData("Organization")]
+    [InlineData("Repository")]
+    [InlineData("Unknown")]
+    public void CanConstructFromString(string stringValue)
+    {
+        var stringEnum = () => new StringEnum<HookType>(stringValue);
+        stringEnum.Should().NotThrow();
+    }
+
+    [Theory]
+    [InlineData(HookType.App)]
+    [InlineData(HookType.Organization)]
+    [InlineData(HookType.Repository)]
+    public void CanConstructFromEnum(HookType enumValue)
+    {
+        var stringEnum = () => new StringEnum<HookType>(enumValue);
+        stringEnum.Should().NotThrow();
+    }
+
+    [Theory]
+    [InlineData("App")]
+    [InlineData("Organization")]
+    [InlineData("Repository")]
+    [InlineData("Unknown")]
+    public void CanGetStringValue(string stringValue)
+    {
+        var stringEnum = new StringEnum<HookType>(stringValue);
+        stringEnum.StringValue.Should().Be(stringValue);
+    }
+
+    [Theory]
+    [InlineData(HookType.App)]
+    [InlineData(HookType.Organization)]
+    [InlineData(HookType.Repository)]
+    public void CanGetEnumValue(HookType enumValue)
+    {
+        var stringEnum = new StringEnum<HookType>(enumValue);
+        stringEnum.Value.Should().Be(enumValue);
+    }
+
+    [Theory]
+    [InlineData("Unknown")]
+    public void ThrowsForUnknownEnumValue(string stringValue)
+    {
+        var stringEnum = () => new StringEnum<HookType>(stringValue).Value;
+        stringEnum.Should().Throw<ArgumentException>();
+    }
+
+    [Theory]
+    [InlineData("App", true)]
+    [InlineData("Organization", true)]
+    [InlineData("Repository", true)]
+    [InlineData("Unknown", false)]
+    public void CanTryParse(string stringValue, bool expected)
+    {
+        var actual = new StringEnum<HookType>(stringValue).TryParse(out _);
+        actual.Should().Be(expected);
+    }
+
+    [Theory]
+    [InlineData("App")]
+    [InlineData("Organization")]
+    [InlineData("Repository")]
+    [InlineData("Unknown")]
+    public void ShouldEquals(string stringValue)
+    {
+        var stringEnum = new StringEnum<HookType>(stringValue);
+        stringEnum.Should().Be(new StringEnum<HookType>(stringValue));
+    }
+}
diff --git a/test/Octokit.Webhooks.Test/StringEnumTests.cs b/test/Octokit.Webhooks.Test/StringEnumTests.cs
new file mode 100644
index 00000000..55f7e59a
--- /dev/null
+++ b/test/Octokit.Webhooks.Test/StringEnumTests.cs
@@ -0,0 +1,25 @@
+namespace Octokit.Webhooks.Test;
+
+using System;
+using System.Linq;
+using FluentAssertions;
+using Xunit;
+
+public class StringEnumTests
+{
+    [Fact]
+    public void NoPropertiesUseBareEnums()
+    {
+        var assembly = typeof(WebhookEvent).Assembly;
+        var types = assembly.GetTypes()
+            .Where(type => type.IsClass && type.IsPublic && type.FullName!.StartsWith(assembly.GetName().Name!, StringComparison.Ordinal))
+            .Select(t => t.GetProperties());
+        foreach (var properties in types)
+        {
+            foreach (var property in properties)
+            {
+                property.PropertyType.IsEnum.Should().BeFalse();
+            }
+        }
+    }
+}