diff --git a/GoCardless/GoCardless.csproj b/GoCardless/GoCardless.csproj
index 213350a..9d58c7b 100644
--- a/GoCardless/GoCardless.csproj
+++ b/GoCardless/GoCardless.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <PackageId>GoCardless</PackageId>
-    <PackageVersion>6.2.0</PackageVersion>
+    <PackageVersion>6.3.0</PackageVersion>
     <Authors>GoCardless Ltd</Authors>
     <Description>Client for the GoCardless API - a powerful, simple solution for the collection of recurring bank-to-bank payments</Description>
     <PackageRequireLicenseAcceptance>false</PackageRequireLicenseAcceptance>
@@ -11,7 +11,7 @@
     <Copyright>GoCardless Ltd</Copyright>
     <PackageTags>gocardless payments rest api direct debit</PackageTags>
     <PackageLicenseUrl>https://github.com/gocardless/gocardless-dotnet/blob/master/LICENSE.txt</PackageLicenseUrl>
-    <PackageReleaseNotes>https://github.com/gocardless/gocardless-dotnet/releases/tag/v6.2.0</PackageReleaseNotes>
+    <PackageReleaseNotes>https://github.com/gocardless/gocardless-dotnet/releases/tag/v6.3.0</PackageReleaseNotes>
     <TargetFrameworks>netstandard1.6;netstandard2.0;netstandard2.1;net46;net8.0</TargetFrameworks>
     <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
diff --git a/GoCardless/GoCardlessClient.cs b/GoCardless/GoCardlessClient.cs
index 8afafd4..11886a0 100644
--- a/GoCardless/GoCardlessClient.cs
+++ b/GoCardless/GoCardlessClient.cs
@@ -277,11 +277,11 @@ private HttpRequestMessage BuildHttpRequestMessage<T>(string method, string path
             runtimeFrameworkInformation = System.Runtime.InteropServices.RuntimeEnvironment.GetSystemVersion();
 #endif
 
-            var userAgentInformation = $" gocardless-dotnet/6.2.0 {runtimeFrameworkInformation} {Helpers.CleanupOSDescriptionString(OSRunningOn)}";
+            var userAgentInformation = $" gocardless-dotnet/6.3.0 {runtimeFrameworkInformation} {Helpers.CleanupOSDescriptionString(OSRunningOn)}";
 
             requestMessage.Headers.Add("User-Agent", userAgentInformation);
             requestMessage.Headers.Add("GoCardless-Version", "2015-07-06");
-            requestMessage.Headers.Add("GoCardless-Client-Version", "6.2.0");
+            requestMessage.Headers.Add("GoCardless-Client-Version", "6.3.0");
             requestMessage.Headers.Add("GoCardless-Client-Library", "gocardless-dotnet");
             requestMessage.Headers.Authorization =
                 new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", _accessToken);
diff --git a/GoCardless/Services/LogoService.cs b/GoCardless/Services/LogoService.cs
index e0fff71..b19e885 100644
--- a/GoCardless/Services/LogoService.cs
+++ b/GoCardless/Services/LogoService.cs
@@ -38,22 +38,18 @@ public LogoService(GoCardlessClient goCardlessClient)
         /// Creates a new logo associated with a creditor. If a creditor already
         /// has a logo, this will update the existing logo linked to the
         /// creditor.
-        /// </summary>  
-        /// <param name="identity">Unique identifier, beginning with "CR".</param> 
+        /// </summary>
         /// <param name="request">An optional `LogoCreateForCreditorRequest` representing the body for this create_for_creditor request.</param>
         /// <param name="customiseRequestMessage">An optional `RequestSettings` allowing you to configure the request</param>
         /// <returns>A single logo resource</returns>
-        public Task<LogoResponse> CreateForCreditorAsync(string identity, LogoCreateForCreditorRequest request = null, RequestSettings customiseRequestMessage = null)
+        public Task<LogoResponse> CreateForCreditorAsync(LogoCreateForCreditorRequest request = null, RequestSettings customiseRequestMessage = null)
         {
             request = request ?? new LogoCreateForCreditorRequest();
-            if (identity == null) throw new ArgumentException(nameof(identity));
 
             var urlParams = new List<KeyValuePair<string, object>>
-            {
-                new KeyValuePair<string, object>("identity", identity),
-            };
+            {};
 
-            return _goCardlessClient.ExecuteAsync<LogoResponse>("POST", "/creditors/:identity/branding/logos", urlParams, request, null, "logos", customiseRequestMessage);
+            return _goCardlessClient.ExecuteAsync<LogoResponse>("POST", "/branding/logos", urlParams, request, null, "logos", customiseRequestMessage);
         }
     }
 
@@ -64,6 +60,30 @@ public Task<LogoResponse> CreateForCreditorAsync(string identity, LogoCreateForC
     /// </summary>
     public class LogoCreateForCreditorRequest
     {
+
+        /// <summary>
+        /// Base64 encoded string.
+        /// </summary>
+        [JsonProperty("image")]
+        public string Image { get; set; }
+
+        /// <summary>
+        /// Linked resources.
+        /// </summary>
+        [JsonProperty("links")]
+        public LogoLinks Links { get; set; }
+        /// <summary>
+        /// Linked resources for a Logo.
+        /// </summary>
+        public class LogoLinks
+        {
+                
+                /// <summary>
+                            /// ID of the creditor the payer theme belongs to
+                /// </summary>
+                [JsonProperty("creditor")]
+                public string Creditor { get; set; }
+        }
     }
 
     /// <summary>
diff --git a/GoCardless/Services/PayerThemeService.cs b/GoCardless/Services/PayerThemeService.cs
index 756e4db..857f68a 100644
--- a/GoCardless/Services/PayerThemeService.cs
+++ b/GoCardless/Services/PayerThemeService.cs
@@ -36,22 +36,18 @@ public PayerThemeService(GoCardlessClient goCardlessClient)
         /// Creates a new payer theme associated with a creditor. If a creditor
         /// already has payer themes, this will update the existing payer theme
         /// linked to the creditor.
-        /// </summary>  
-        /// <param name="identity">Unique identifier, beginning with "CR".</param> 
+        /// </summary>
         /// <param name="request">An optional `PayerThemeCreateForCreditorRequest` representing the body for this create_for_creditor request.</param>
         /// <param name="customiseRequestMessage">An optional `RequestSettings` allowing you to configure the request</param>
         /// <returns>A single payer theme resource</returns>
-        public Task<PayerThemeResponse> CreateForCreditorAsync(string identity, PayerThemeCreateForCreditorRequest request = null, RequestSettings customiseRequestMessage = null)
+        public Task<PayerThemeResponse> CreateForCreditorAsync(PayerThemeCreateForCreditorRequest request = null, RequestSettings customiseRequestMessage = null)
         {
             request = request ?? new PayerThemeCreateForCreditorRequest();
-            if (identity == null) throw new ArgumentException(nameof(identity));
 
             var urlParams = new List<KeyValuePair<string, object>>
-            {
-                new KeyValuePair<string, object>("identity", identity),
-            };
+            {};
 
-            return _goCardlessClient.ExecuteAsync<PayerThemeResponse>("POST", "/creditors/:identity/branding/payer_themes", urlParams, request, null, "payer_themes", customiseRequestMessage);
+            return _goCardlessClient.ExecuteAsync<PayerThemeResponse>("POST", "/branding/payer_themes", urlParams, request, null, "payer_themes", customiseRequestMessage);
         }
     }
 
@@ -87,6 +83,24 @@ public class PayerThemeCreateForCreditorRequest
         /// </summary>
         [JsonProperty("link_text_colour")]
         public string LinkTextColour { get; set; }
+
+        /// <summary>
+        /// Linked resources.
+        /// </summary>
+        [JsonProperty("links")]
+        public PayerThemeLinks Links { get; set; }
+        /// <summary>
+        /// Linked resources for a PayerTheme.
+        /// </summary>
+        public class PayerThemeLinks
+        {
+                
+                /// <summary>
+                            /// ID of the creditor the payer theme belongs to
+                /// </summary>
+                [JsonProperty("creditor")]
+                public string Creditor { get; set; }
+        }
     }
 
     /// <summary>
diff --git a/README.md b/README.md
index 3c12664..a082484 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ For full details of the GoCardless API, see the [API docs](https://developer.goc
 
 To install `GoCardless`, run the following command in the [Package Manager Console](https://docs.microsoft.com/en-us/nuget/tools/package-manager-console)
 
-`Install-Package GoCardless -Version 6.2.0`
+`Install-Package GoCardless -Version 6.3.0`
 
 
 ## Usage