diff --git a/kotlin/build.gradle b/kotlin/build.gradle
index 5b110bf72..3f6f7be91 100644
--- a/kotlin/build.gradle
+++ b/kotlin/build.gradle
@@ -35,7 +35,7 @@ dependencies {
     implementation "io.ktor:ktor-client:$ktorVersion"
     implementation "io.ktor:ktor-client-okhttp:$ktorVersion"
     implementation "io.ktor:ktor-client-json:$ktorVersion"
-    implementation "io.ktor:ktor-client-jackson:$ktorVersion"
+    implementation "io.ktor:ktor-client-gson:$ktorVersion"
 
     implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.0-RC'
     implementation 'com.google.code.gson:gson:2.8.5'
diff --git a/kotlin/src/main/com/looker/rtl/AuthToken.kt b/kotlin/src/main/com/looker/rtl/AuthToken.kt
index 9d0a80c67..3b2dc6abd 100644
--- a/kotlin/src/main/com/looker/rtl/AuthToken.kt
+++ b/kotlin/src/main/com/looker/rtl/AuthToken.kt
@@ -24,18 +24,28 @@
 
 package com.looker.rtl
 
-import com.fasterxml.jackson.annotation.JsonProperty
+import com.google.gson.JsonDeserializationContext
+import com.google.gson.JsonDeserializer
+import com.google.gson.JsonElement
+import com.google.gson.TypeAdapter
+import com.google.gson.annotations.SerializedName
+import com.google.gson.stream.JsonReader
+import com.google.gson.stream.JsonToken
+import com.google.gson.stream.JsonWriter
 import com.looker.sdk.AccessToken
+import io.ktor.client.features.json.GsonSerializer
+import io.ktor.client.features.json.defaultSerializer
+import java.lang.reflect.Type
 import java.time.LocalDateTime
 
 data class AuthToken(
-    @JsonProperty("access_token")
+    @SerializedName("access_token")
     var accessToken: String = "", // TODO: Consider making this/these vals and using new objects instead of mutating
-    @JsonProperty("token_type")
+    @SerializedName("token_type")
     var tokenType: String = "",
-    @JsonProperty("expires_in")
+    @SerializedName("expires_in")
     var expiresIn: Long = 0L,
-    @JsonProperty("refresh_token")
+    @SerializedName("refresh_token")
     var refreshToken: String? = null
 ) {
 
@@ -80,3 +90,55 @@ data class AuthToken(
         expiresIn = 0
     }
 }
+
+/**
+ * Adapter for serialization/deserialization of [AuthToken].
+ * This is required since Gson used no-args constructor to create objects. Gson's default
+ * deserializer first creates an [AuthToken] object with default values which results with incorrect
+ * value being assigned to [AuthToken.expiresAt] in its init block.
+ *
+ * This adapter mitigates this by calling the constructor with deserialized values.
+ */
+class AuthTokenAdapter: TypeAdapter<AuthToken>() {
+    override fun read(jsonReader: JsonReader?): AuthToken {
+        val authToken = AuthToken()
+        jsonReader?.beginObject()
+
+        while (jsonReader?.hasNext() == true) {
+            if (jsonReader.peek().equals(JsonToken.NAME)) {
+                when (jsonReader.nextName()) {
+                    "access_token" -> authToken.accessToken = jsonReader.nextString()
+                    "token_type" -> authToken.tokenType = jsonReader.nextString()
+                    "expires_in" -> authToken.expiresIn = jsonReader.nextLong()
+                    "refresh_token" -> {
+                        if (jsonReader.peek().equals(JsonToken.NULL)) {
+                            authToken.refreshToken = null
+                            jsonReader.nextNull()
+                        } else {
+                            authToken.refreshToken = jsonReader.nextString()
+                        }
+                    }
+                    else -> break
+                }
+            }
+        }
+
+        jsonReader?.endObject()
+
+        // return new AuthToken calling its constructor with deserialized values
+        return AuthToken(authToken.accessToken, authToken.tokenType, authToken.expiresIn, authToken.refreshToken)
+    }
+
+    override fun write(jsonWriter: JsonWriter?, authToken: AuthToken?) {
+        jsonWriter?.beginObject()
+        jsonWriter?.name("access_token")
+        jsonWriter?.value(authToken?.accessToken)
+        jsonWriter?.name("token_type")
+        jsonWriter?.value(authToken?.tokenType)
+        jsonWriter?.name("expires_in")
+        jsonWriter?.value(authToken?.expiresIn)
+        jsonWriter?.name("refresh_token")
+        jsonWriter?.value(authToken?.refreshToken)
+        jsonWriter?.endObject()
+    }
+}
diff --git a/kotlin/src/main/com/looker/rtl/Transport.kt b/kotlin/src/main/com/looker/rtl/Transport.kt
index 89783b317..d5f334b5b 100644
--- a/kotlin/src/main/com/looker/rtl/Transport.kt
+++ b/kotlin/src/main/com/looker/rtl/Transport.kt
@@ -24,11 +24,13 @@
 
 package com.looker.rtl
 
-import com.google.gson.Gson
+import com.google.gson.GsonBuilder
+import com.google.gson.JsonDeserializer
 import io.ktor.client.HttpClient
 import io.ktor.client.call.receive
 import io.ktor.client.engine.okhttp.OkHttp
-import io.ktor.client.features.json.JacksonSerializer
+import io.ktor.client.features.json.GsonSerializer
+import io.ktor.client.features.json.defaultSerializer
 import io.ktor.client.features.json.JsonFeature
 import io.ktor.client.request.HttpRequestBuilder
 import io.ktor.client.request.forms.FormDataContent
@@ -179,7 +181,9 @@ fun customClient(options: TransportOptions): HttpClient {
     // This construction loosely adapted from https://ktor.io/clients/http-client/engines.html#artifact-7
     return HttpClient(OkHttp) {
         install(JsonFeature) {
-            serializer = JacksonSerializer()
+            serializer = GsonSerializer {
+                registerTypeAdapter(AuthToken::class.java, AuthTokenAdapter())
+            }
         }
         engine {
             config {
@@ -336,12 +340,11 @@ class Transport(val options: TransportOptions) {
                 }
                 else -> {
                     // Request body
-//                    val gson = GsonBuilder().setDateFormat("yyyy-MM-dd'T'HH:mm:ssX").create()
-                    val gson = Gson()
-                    val jsonBody = gson.toJson(body)
+                    val json = defaultSerializer()
+                    val jsonBody = json.write(body)
 
                     builder.body = jsonBody
-                    headers["Content-Length"] = jsonBody.length.toString()
+                    headers["Content-Length"] = jsonBody.contentLength.toString()
                 }
             }
         }
diff --git a/kotlin/src/main/com/looker/sdk/4.0/models.kt b/kotlin/src/main/com/looker/sdk/4.0/models.kt
index e77b84898..dfe79a8ea 100644
--- a/kotlin/src/main/com/looker/sdk/4.0/models.kt
+++ b/kotlin/src/main/com/looker/sdk/4.0/models.kt
@@ -33,7 +33,6 @@
 
 package com.looker.sdk
 
-import com.fasterxml.jackson.annotation.JsonProperty
 import com.looker.rtl.*
 import java.io.Serializable
 import java.util.*
@@ -77,11 +76,7 @@ data class Alert (
     var destinations: Array<AlertDestination>? = null,
     var field: AlertField? = null,
     var id: Long? = null,
-    @get:JsonProperty("is_disabled")
-    @param:JsonProperty("is_disabled")
     var is_disabled: Boolean? = null,
-    @get:JsonProperty("is_public")
-    @param:JsonProperty("is_public")
     var is_public: Boolean? = null,
     var lookml_dashboard_id: String? = null,
     var lookml_link_id: String? = null,
@@ -883,8 +878,6 @@ data class CredentialsApi3 (
     var id: Long? = null,
     var client_id: String? = null,
     var created_at: String? = null,
-    @get:JsonProperty("is_disabled")
-    @param:JsonProperty("is_disabled")
     var is_disabled: Boolean? = null,
     var type: String? = null,
     var url: String? = null
@@ -907,8 +900,6 @@ data class CredentialsEmail (
     var created_at: String? = null,
     var email: String? = null,
     var forced_password_reset_at_next_login: Boolean? = null,
-    @get:JsonProperty("is_disabled")
-    @param:JsonProperty("is_disabled")
     var is_disabled: Boolean? = null,
     var logged_in_at: String? = null,
     var password_reset_url: String? = null,
@@ -934,8 +925,6 @@ data class CredentialsEmailSearch (
     var created_at: String? = null,
     var email: String? = null,
     var forced_password_reset_at_next_login: Boolean? = null,
-    @get:JsonProperty("is_disabled")
-    @param:JsonProperty("is_disabled")
     var is_disabled: Boolean? = null,
     var logged_in_at: String? = null,
     var password_reset_url: String? = null,
@@ -961,8 +950,6 @@ data class CredentialsEmbed (
     var external_group_id: String? = null,
     var external_user_id: String? = null,
     var id: Long? = null,
-    @get:JsonProperty("is_disabled")
-    @param:JsonProperty("is_disabled")
     var is_disabled: Boolean? = null,
     var logged_in_at: String? = null,
     var type: String? = null,
@@ -986,8 +973,6 @@ data class CredentialsGoogle (
     var domain: String? = null,
     var email: String? = null,
     var google_user_id: String? = null,
-    @get:JsonProperty("is_disabled")
-    @param:JsonProperty("is_disabled")
     var is_disabled: Boolean? = null,
     var logged_in_at: String? = null,
     var type: String? = null,
@@ -1009,8 +994,6 @@ data class CredentialsLDAP (
     var can: Map<String,Boolean>? = null,
     var created_at: String? = null,
     var email: String? = null,
-    @get:JsonProperty("is_disabled")
-    @param:JsonProperty("is_disabled")
     var is_disabled: Boolean? = null,
     var ldap_dn: String? = null,
     var ldap_id: String? = null,
@@ -1034,8 +1017,6 @@ data class CredentialsLookerOpenid (
     var can: Map<String,Boolean>? = null,
     var created_at: String? = null,
     var email: String? = null,
-    @get:JsonProperty("is_disabled")
-    @param:JsonProperty("is_disabled")
     var is_disabled: Boolean? = null,
     var logged_in_at: String? = null,
     var logged_in_ip: String? = null,
@@ -1058,8 +1039,6 @@ data class CredentialsOIDC (
     var can: Map<String,Boolean>? = null,
     var created_at: String? = null,
     var email: String? = null,
-    @get:JsonProperty("is_disabled")
-    @param:JsonProperty("is_disabled")
     var is_disabled: Boolean? = null,
     var logged_in_at: String? = null,
     var oidc_user_id: String? = null,
@@ -1081,8 +1060,6 @@ data class CredentialsSaml (
     var can: Map<String,Boolean>? = null,
     var created_at: String? = null,
     var email: String? = null,
-    @get:JsonProperty("is_disabled")
-    @param:JsonProperty("is_disabled")
     var is_disabled: Boolean? = null,
     var logged_in_at: String? = null,
     var saml_user_id: String? = null,
@@ -1103,8 +1080,6 @@ data class CredentialsSaml (
 data class CredentialsTotp (
     var can: Map<String,Boolean>? = null,
     var created_at: String? = null,
-    @get:JsonProperty("is_disabled")
-    @param:JsonProperty("is_disabled")
     var is_disabled: Boolean? = null,
     var type: String? = null,
     var verified: Boolean? = null,
@@ -1805,8 +1780,6 @@ data class DialectInfoOptions (
  * @property is_enabled Whether or not digest emails are enabled
  */
 data class DigestEmails (
-    @get:JsonProperty("is_enabled")
-    @param:JsonProperty("is_enabled")
     var is_enabled: Boolean? = null
 ) : Serializable
 
@@ -1944,26 +1917,12 @@ data class Folder (
     var creator_id: Long? = null,
     var child_count: Long? = null,
     var external_id: String? = null,
-    @get:JsonProperty("is_embed")
-    @param:JsonProperty("is_embed")
     var is_embed: Boolean? = null,
-    @get:JsonProperty("is_embed_shared_root")
-    @param:JsonProperty("is_embed_shared_root")
     var is_embed_shared_root: Boolean? = null,
-    @get:JsonProperty("is_embed_users_root")
-    @param:JsonProperty("is_embed_users_root")
     var is_embed_users_root: Boolean? = null,
-    @get:JsonProperty("is_personal")
-    @param:JsonProperty("is_personal")
     var is_personal: Boolean? = null,
-    @get:JsonProperty("is_personal_descendant")
-    @param:JsonProperty("is_personal_descendant")
     var is_personal_descendant: Boolean? = null,
-    @get:JsonProperty("is_shared_root")
-    @param:JsonProperty("is_shared_root")
     var is_shared_root: Boolean? = null,
-    @get:JsonProperty("is_users_root")
-    @param:JsonProperty("is_users_root")
     var is_users_root: Boolean? = null,
     var can: Map<String,Boolean>? = null,
     var dashboards: Array<DashboardBase>? = null,
@@ -1997,26 +1956,12 @@ data class FolderBase (
     var creator_id: Long? = null,
     var child_count: Long? = null,
     var external_id: String? = null,
-    @get:JsonProperty("is_embed")
-    @param:JsonProperty("is_embed")
     var is_embed: Boolean? = null,
-    @get:JsonProperty("is_embed_shared_root")
-    @param:JsonProperty("is_embed_shared_root")
     var is_embed_shared_root: Boolean? = null,
-    @get:JsonProperty("is_embed_users_root")
-    @param:JsonProperty("is_embed_users_root")
     var is_embed_users_root: Boolean? = null,
-    @get:JsonProperty("is_personal")
-    @param:JsonProperty("is_personal")
     var is_personal: Boolean? = null,
-    @get:JsonProperty("is_personal_descendant")
-    @param:JsonProperty("is_personal_descendant")
     var is_personal_descendant: Boolean? = null,
-    @get:JsonProperty("is_shared_root")
-    @param:JsonProperty("is_shared_root")
     var is_shared_root: Boolean? = null,
-    @get:JsonProperty("is_users_root")
-    @param:JsonProperty("is_users_root")
     var is_users_root: Boolean? = null,
     var can: Map<String,Boolean>? = null
 ) : Serializable
@@ -2058,14 +2003,8 @@ data class GitBranch (
     var owner_name: String? = null,
     var readonly: Boolean? = null,
     var personal: Boolean? = null,
-    @get:JsonProperty("is_local")
-    @param:JsonProperty("is_local")
     var is_local: Boolean? = null,
-    @get:JsonProperty("is_remote")
-    @param:JsonProperty("is_remote")
     var is_remote: Boolean? = null,
-    @get:JsonProperty("is_production")
-    @param:JsonProperty("is_production")
     var is_production: Boolean? = null,
     var ahead_count: Long? = null,
     var behind_count: Long? = null,
@@ -2288,8 +2227,6 @@ data class HomepageSection (
     var homepage_id: Long? = null,
     var homepage_items: Array<HomepageItem>? = null,
     var id: Long? = null,
-    @get:JsonProperty("is_header")
-    @param:JsonProperty("is_header")
     var is_header: Boolean? = null,
     var item_order: Array<Long>? = null,
     var title: String? = null,
@@ -2308,8 +2245,6 @@ data class ImportedProject (
     var name: String? = null,
     var url: String? = null,
     var ref: String? = null,
-    @get:JsonProperty("is_remote")
-    @param:JsonProperty("is_remote")
     var is_remote: Boolean? = null
 ) : Serializable
 
@@ -2518,8 +2453,6 @@ data class LDAPConfig (
     var merge_new_users_by_email: Boolean? = null,
     var modified_at: String? = null,
     var modified_by: String? = null,
-    @get:JsonProperty("set_roles_from_groups")
-    @param:JsonProperty("set_roles_from_groups")
     var set_roles_from_groups: Boolean? = null,
     var test_ldap_password: String? = null,
     var test_ldap_user: String? = null,
@@ -2559,8 +2492,6 @@ data class LDAPConfigTestIssue (
  */
 data class LDAPConfigTestResult (
     var details: String? = null,
-    @get:JsonProperty("issues")
-    @param:JsonProperty("issues")
     var issues: Array<LDAPConfigTestIssue>? = null,
     var message: String? = null,
     var status: String? = null,
@@ -2762,8 +2693,6 @@ data class Look (
     var favorite_count: Long? = null,
     var google_spreadsheet_formula: String? = null,
     var image_embed_url: String? = null,
-    @get:JsonProperty("is_run_on_load")
-    @param:JsonProperty("is_run_on_load")
     var is_run_on_load: Boolean? = null,
     var last_accessed_at: Date? = null,
     var last_updater_id: Long? = null,
@@ -2888,8 +2817,6 @@ data class LookmlModelExplore (
     var always_filter: Array<LookmlModelExploreAlwaysFilter>? = null,
     var conditionally_filter: Array<LookmlModelExploreConditionallyFilter>? = null,
     var index_fields: Array<String>? = null,
-    @get:JsonProperty("sets")
-    @param:JsonProperty("sets")
     var sets: Array<LookmlModelExploreSet>? = null,
     var tags: Array<String>? = null,
     var errors: Array<LookmlModelExploreError>? = null,
@@ -3019,17 +2946,9 @@ data class LookmlModelExploreField (
     var fiscal_month_offset: Long? = null,
     var has_allowed_values: Boolean? = null,
     var hidden: Boolean? = null,
-    @get:JsonProperty("is_filter")
-    @param:JsonProperty("is_filter")
     var is_filter: Boolean? = null,
-    @get:JsonProperty("is_fiscal")
-    @param:JsonProperty("is_fiscal")
     var is_fiscal: Boolean? = null,
-    @get:JsonProperty("is_numeric")
-    @param:JsonProperty("is_numeric")
     var is_numeric: Boolean? = null,
-    @get:JsonProperty("is_timeframe")
-    @param:JsonProperty("is_timeframe")
     var is_timeframe: Boolean? = null,
     var can_time_filter: Boolean? = null,
     var time_interval: LookmlModelExploreFieldTimeInterval? = null,
@@ -3306,8 +3225,6 @@ data class LookWithDashboards (
     var favorite_count: Long? = null,
     var google_spreadsheet_formula: String? = null,
     var image_embed_url: String? = null,
-    @get:JsonProperty("is_run_on_load")
-    @param:JsonProperty("is_run_on_load")
     var is_run_on_load: Boolean? = null,
     var last_accessed_at: Date? = null,
     var last_updater_id: Long? = null,
@@ -3376,8 +3293,6 @@ data class LookWithQuery (
     var favorite_count: Long? = null,
     var google_spreadsheet_formula: String? = null,
     var image_embed_url: String? = null,
-    @get:JsonProperty("is_run_on_load")
-    @param:JsonProperty("is_run_on_load")
     var is_run_on_load: Boolean? = null,
     var last_accessed_at: Date? = null,
     var last_updater_id: Long? = null,
@@ -3619,16 +3534,12 @@ data class OIDCConfig (
     var groups_attribute: String? = null,
     var groups_with_role_ids: Array<OIDCGroupWrite>? = null,
     var identifier: String? = null,
-    @get:JsonProperty("issuer")
-    @param:JsonProperty("issuer")
     var issuer: String? = null,
     var modified_at: Date? = null,
     var modified_by: Long? = null,
     var new_user_migration_types: String? = null,
     var scopes: Array<String>? = null,
     var secret: String? = null,
-    @get:JsonProperty("set_roles_from_groups")
-    @param:JsonProperty("set_roles_from_groups")
     var set_roles_from_groups: Boolean? = null,
     var test_slug: String? = null,
     var token_endpoint: String? = null,
@@ -3796,8 +3707,6 @@ data class Project (
     var validation_required: Boolean? = null,
     var git_release_mgmt_enabled: Boolean? = null,
     var allow_warnings: Boolean? = null,
-    @get:JsonProperty("is_example")
-    @param:JsonProperty("is_example")
     var is_example: Boolean? = null,
     var dependency_status: String? = null
 ) : Serializable
@@ -4074,8 +3983,6 @@ data class RepositoryCredential (
     var git_username: String? = null,
     var git_password: String? = null,
     var ssh_public_key: String? = null,
-    @get:JsonProperty("is_configured")
-    @param:JsonProperty("is_configured")
     var is_configured: Boolean? = null
 ) : Serializable
 
@@ -4292,8 +4199,6 @@ data class SamlConfig (
     var default_new_user_groups: Array<Group>? = null,
     var default_new_user_role_ids: Array<Long>? = null,
     var default_new_user_group_ids: Array<Long>? = null,
-    @get:JsonProperty("set_roles_from_groups")
-    @param:JsonProperty("set_roles_from_groups")
     var set_roles_from_groups: Boolean? = null,
     var groups_attribute: String? = null,
     var groups: Array<SamlGroupRead>? = null,
@@ -4489,8 +4394,6 @@ data class ScheduledPlanDestination (
  */
 data class Schema (
     var name: String? = null,
-    @get:JsonProperty("is_default")
-    @param:JsonProperty("is_default")
     var is_default: Boolean? = null
 ) : Serializable
 
@@ -4554,8 +4457,6 @@ data class SchemaTable (
  */
 data class SchemaTables (
     var name: String? = null,
-    @get:JsonProperty("is_default")
-    @param:JsonProperty("is_default")
     var is_default: Boolean? = null,
     var tables: Array<SchemaTable>? = null
 ) : Serializable
@@ -4807,8 +4708,6 @@ data class Theme (
     var end_at: Date? = null,
     var id: Long? = null,
     var name: String? = null,
-    @get:JsonProperty("settings")
-    @param:JsonProperty("settings")
     var settings: ThemeSettings? = null
 ) : Serializable
 
@@ -4937,8 +4836,6 @@ data class User (
     var group_ids: Array<Long>? = null,
     var home_folder_id: String? = null,
     var id: Long? = null,
-    @get:JsonProperty("is_disabled")
-    @param:JsonProperty("is_disabled")
     var is_disabled: Boolean? = null,
     var last_name: String? = null,
     var locale: String? = null,
@@ -4978,11 +4875,7 @@ data class UserAttribute (
     var label: String,
     var type: String,
     var default_value: String? = null,
-    @get:JsonProperty("is_system")
-    @param:JsonProperty("is_system")
     var is_system: Boolean? = null,
-    @get:JsonProperty("is_permanent")
-    @param:JsonProperty("is_permanent")
     var is_permanent: Boolean? = null,
     var value_is_hidden: Boolean? = null,
     var user_can_view: Boolean? = null,
@@ -5176,8 +5069,6 @@ data class WhitelabelConfiguration (
     var allow_looker_mentions: Boolean? = null,
     var allow_looker_links: Boolean? = null,
     var custom_welcome_email_advanced: Boolean? = null,
-    @get:JsonProperty("setup_mentions")
-    @param:JsonProperty("setup_mentions")
     var setup_mentions: Boolean? = null,
     var alerts_logo: Boolean? = null,
     var alerts_links: Boolean? = null,
@@ -5222,11 +5113,7 @@ data class WriteAlert (
     var dashboard_element_id: Long? = null,
     var destinations: Array<AlertDestination>? = null,
     var field: AlertField? = null,
-    @get:JsonProperty("is_disabled")
-    @param:JsonProperty("is_disabled")
     var is_disabled: Boolean? = null,
-    @get:JsonProperty("is_public")
-    @param:JsonProperty("is_public")
     var is_public: Boolean? = null,
     var lookml_dashboard_id: String? = null,
     var lookml_link_id: String? = null,
@@ -5914,8 +5801,6 @@ data class WriteLDAPConfig (
     var groups_user_attribute: String? = null,
     var groups_with_role_ids: Array<LDAPGroupWrite>? = null,
     var merge_new_users_by_email: Boolean? = null,
-    @get:JsonProperty("set_roles_from_groups")
-    @param:JsonProperty("set_roles_from_groups")
     var set_roles_from_groups: Boolean? = null,
     var test_ldap_password: String? = null,
     var test_ldap_user: String? = null,
@@ -5991,8 +5876,6 @@ data class WriteLookWithQuery (
     var user_id: Long? = null,
     var deleted: Boolean? = null,
     var description: String? = null,
-    @get:JsonProperty("is_run_on_load")
-    @param:JsonProperty("is_run_on_load")
     var is_run_on_load: Boolean? = null,
     var public: Boolean? = null,
     var query_id: Long? = null,
@@ -6093,14 +5976,10 @@ data class WriteOIDCConfig (
     var groups_attribute: String? = null,
     var groups_with_role_ids: Array<OIDCGroupWrite>? = null,
     var identifier: String? = null,
-    @get:JsonProperty("issuer")
-    @param:JsonProperty("issuer")
     var issuer: String? = null,
     var new_user_migration_types: String? = null,
     var scopes: Array<String>? = null,
     var secret: String? = null,
-    @get:JsonProperty("set_roles_from_groups")
-    @param:JsonProperty("set_roles_from_groups")
     var set_roles_from_groups: Boolean? = null,
     var token_endpoint: String? = null,
     var user_attribute_map_email: String? = null,
@@ -6319,8 +6198,6 @@ data class WriteSamlConfig (
     var alternate_email_login_allowed: Boolean? = null,
     var default_new_user_role_ids: Array<Long>? = null,
     var default_new_user_group_ids: Array<Long>? = null,
-    @get:JsonProperty("set_roles_from_groups")
-    @param:JsonProperty("set_roles_from_groups")
     var set_roles_from_groups: Boolean? = null,
     var groups_attribute: String? = null,
     var groups_with_role_ids: Array<SamlGroupWrite>? = null,
@@ -6471,8 +6348,6 @@ data class WriteTheme (
     var begin_at: Date? = null,
     var end_at: Date? = null,
     var name: String? = null,
-    @get:JsonProperty("settings")
-    @param:JsonProperty("settings")
     var settings: ThemeSettings? = null
 ) : Serializable
 
@@ -6494,8 +6369,6 @@ data class WriteUser (
     var credentials_email: WriteCredentialsEmail? = null,
     var first_name: String? = null,
     var home_folder_id: String? = null,
-    @get:JsonProperty("is_disabled")
-    @param:JsonProperty("is_disabled")
     var is_disabled: Boolean? = null,
     var last_name: String? = null,
     var locale: String? = null,
@@ -6565,8 +6438,6 @@ data class WriteWhitelabelConfiguration (
     var allow_looker_mentions: Boolean? = null,
     var allow_looker_links: Boolean? = null,
     var custom_welcome_email_advanced: Boolean? = null,
-    @get:JsonProperty("setup_mentions")
-    @param:JsonProperty("setup_mentions")
     var setup_mentions: Boolean? = null,
     var alerts_logo: Boolean? = null,
     var alerts_links: Boolean? = null,
diff --git a/kotlin/src/test/TestSmoke.kt b/kotlin/src/test/TestSmoke.kt
index 9d64d36d1..6d220b65b 100644
--- a/kotlin/src/test/TestSmoke.kt
+++ b/kotlin/src/test/TestSmoke.kt
@@ -1,10 +1,12 @@
 import com.looker.rtl.DelimArray
+import com.looker.rtl.SDKResponse
 import com.looker.sdk.*
 import org.junit.Test
 import kotlin.test.assertEquals
 import kotlin.test.assertNotEquals
 import kotlin.test.assertNotNull
 import kotlin.test.assertTrue
+import java.io.Serializable
 
 class TestSmoke {
     private val sdk by lazy { TestConfig().sdk }
@@ -186,4 +188,39 @@ class TestSmoke {
         assertEquals(other.id, actual.id)
         sdk.ok<ColorCollection>(sdk.set_default_color_collection(current.id!!))
     }
+
+    /**
+     * Smoke: ignore unknown json fields
+     *
+     * Call '/users' but deserialize it to [DummyUser] and test that unknown fields are ignored
+     * during deserialization.
+     */
+
+    private fun get_dummy_users(): SDKResponse {
+        return sdk.get<Array<DummyUser>>("/users")
+    }
+
+    @Test
+    fun testIgnoreUnknownFields() {
+        prepUsers()
+        var received = false
+        try {
+            val users = sdk.ok<Array<DummyUser>>(get_dummy_users())
+            assertNotNull(users[0].id)
+            received = true
+        } catch (e: java.lang.Error) {
+            assertTrue(false, "$e.message")
+        }
+        assertEquals(true, received)
+    }
 }
+
+/**
+ * Dummy user data class based on [User] but with a subset of its properties.
+ */
+data class DummyUser (
+    var id: Long? = null,
+    var credentials_api3: Array<CredentialsApi3>? = null,
+    var display_name: String? = null,
+    var email: String? = null
+) : Serializable
diff --git a/packages/sdk-codegen/src/kotlin.gen.ts b/packages/sdk-codegen/src/kotlin.gen.ts
index 5554f8a21..3ce7e64f7 100644
--- a/packages/sdk-codegen/src/kotlin.gen.ts
+++ b/packages/sdk-codegen/src/kotlin.gen.ts
@@ -117,7 +117,6 @@ class ${this.sdkClassName()}Stream(authSession: AuthSession) : APIMethods(authSe
 
 package com.looker.sdk${this.apiNamespace()}
 
-import com.fasterxml.jackson.annotation.JsonProperty
 import com.looker.rtl.*
 import java.io.Serializable
 import java.util.*
@@ -156,15 +155,7 @@ import java.util.*
   declareProperty(indent: string, property: IProperty) {
     const optional = !property.required ? '? = null' : ''
     const type = this.typeMap(property.type)
-    // Bypass jackson serialization bug https://stackoverflow.com/questions/32270422/jackson-renames-primitive-boolean-field-by-removing-is
-    const attr =
-      property.hasSpecialNeeds ||
-      property.jsonName.startsWith('is') ||
-      property.jsonName.startsWith('get') ||
-      property.jsonName.startsWith('set')
-        ? `${indent}@get:JsonProperty("${property.jsonName}")\n${indent}@param:JsonProperty("${property.jsonName}")\n`
-        : ''
-    const result = `${attr}${indent}var ${property.name}: ${type.name}${optional}`
+    const result = `${indent}var ${property.name}: ${type.name}${optional}`
     return result
   }