diff --git a/stream-chat-android-client/src/main/java/io/getstream/chat/android/client/ChatClient.kt b/stream-chat-android-client/src/main/java/io/getstream/chat/android/client/ChatClient.kt
index 093176241b4..baa7bef0e91 100644
--- a/stream-chat-android-client/src/main/java/io/getstream/chat/android/client/ChatClient.kt
+++ b/stream-chat-android-client/src/main/java/io/getstream/chat/android/client/ChatClient.kt
@@ -4289,6 +4289,11 @@ internal constructor(
      *
      * @param userId The ID of the user to un-flag.
      */
+    @Deprecated(
+        message = "The backend no longer supports un-flagging. This call does nothing and will be removed " +
+            "in the next major version.",
+        level = DeprecationLevel.WARNING,
+    )
     @CheckResult
     public fun unflagUser(userId: String): Call<Flag> = api.unflagUser(userId)
 
@@ -4315,6 +4320,11 @@ internal constructor(
      *
      * @param messageId The ID of the message to un-flag.
      */
+    @Deprecated(
+        message = "The backend no longer supports un-flagging. This call does nothing and will be removed " +
+            "in the next major version.",
+        level = DeprecationLevel.WARNING,
+    )
     @CheckResult
     public fun unflagMessage(messageId: String): Call<Flag> = api.unflagMessage(messageId)
 
diff --git a/stream-chat-android-client/src/test/java/io/getstream/chat/android/client/ChatClientModerationApiTests.kt b/stream-chat-android-client/src/test/java/io/getstream/chat/android/client/ChatClientModerationApiTests.kt
index fa3112b7fb6..112fad936de 100644
--- a/stream-chat-android-client/src/test/java/io/getstream/chat/android/client/ChatClientModerationApiTests.kt
+++ b/stream-chat-android-client/src/test/java/io/getstream/chat/android/client/ChatClientModerationApiTests.kt
@@ -44,6 +44,7 @@ import org.mockito.kotlin.whenever
 /**
  * Tests for the moderation functionalities of the [ChatClient].
  */
+@Suppress("DEPRECATION")
 internal class ChatClientModerationApiTests : BaseChatClientTest() {
 
     @Test
diff --git a/stream-chat-android-compose/src/main/java/io/getstream/chat/android/compose/viewmodel/messages/MessageListViewModel.kt b/stream-chat-android-compose/src/main/java/io/getstream/chat/android/compose/viewmodel/messages/MessageListViewModel.kt
index a2da0e4df9b..f546c435480 100644
--- a/stream-chat-android-compose/src/main/java/io/getstream/chat/android/compose/viewmodel/messages/MessageListViewModel.kt
+++ b/stream-chat-android-compose/src/main/java/io/getstream/chat/android/compose/viewmodel/messages/MessageListViewModel.kt
@@ -410,6 +410,12 @@ public class MessageListViewModel(
      *
      * @param userId The ID of the user to un-flag.
      */
+    @Deprecated(
+        message = "The backend no longer supports un-flagging. This call does nothing and will be removed " +
+            "in the next major version.",
+        level = DeprecationLevel.WARNING,
+    )
+    @Suppress("DEPRECATION")
     public fun unflagUser(userId: String) {
         messageListController.unflagUser(userId)
     }
diff --git a/stream-chat-android-ui-common/src/main/kotlin/io/getstream/chat/android/ui/common/feature/messages/list/MessageListController.kt b/stream-chat-android-ui-common/src/main/kotlin/io/getstream/chat/android/ui/common/feature/messages/list/MessageListController.kt
index 9c50cdcc68c..d9e0fe7e2a6 100644
--- a/stream-chat-android-ui-common/src/main/kotlin/io/getstream/chat/android/ui/common/feature/messages/list/MessageListController.kt
+++ b/stream-chat-android-ui-common/src/main/kotlin/io/getstream/chat/android/ui/common/feature/messages/list/MessageListController.kt
@@ -2246,6 +2246,12 @@ public class MessageListController(
      *
      * @param userId The ID of the user to un-flag.
      */
+    @Deprecated(
+        message = "The backend no longer supports un-flagging. This call does nothing and will be removed " +
+            "in the next major version.",
+        level = DeprecationLevel.WARNING,
+    )
+    @Suppress("DEPRECATION")
     public fun unflagUser(userId: String) {
         chatClient
             .unflagUser(userId = userId)
@@ -2610,6 +2616,11 @@ public class MessageListController(
          *
          * @param streamError Contains the original [Throwable] along with a message.
          */
+        @Deprecated(
+            message = "The backend no longer supports un-flagging. This call does nothing and will be removed " +
+                "in the next major version.",
+            level = DeprecationLevel.WARNING,
+        )
         public data class UnflagUserError(override val streamError: Error) : ErrorEvent(streamError)
 
         /**
diff --git a/stream-chat-android-ui-components/src/main/kotlin/io/getstream/chat/android/ui/feature/messages/list/MessageListView.kt b/stream-chat-android-ui-components/src/main/kotlin/io/getstream/chat/android/ui/feature/messages/list/MessageListView.kt
index 57b51087694..0f8858df0f5 100644
--- a/stream-chat-android-ui-components/src/main/kotlin/io/getstream/chat/android/ui/feature/messages/list/MessageListView.kt
+++ b/stream-chat-android-ui-components/src/main/kotlin/io/getstream/chat/android/ui/feature/messages/list/MessageListView.kt
@@ -301,6 +301,7 @@ public class MessageListView : ConstraintLayout {
         }
     }
 
+    @Suppress("DEPRECATION")
     private var errorEventHandler = ErrorEventHandler { error ->
         when (error) {
             is MessageListController.ErrorEvent.MuteUserError -> R.string.stream_ui_message_list_error_mute_user
diff --git a/stream-chat-android-ui-components/src/main/kotlin/io/getstream/chat/android/ui/viewmodel/messages/MessageListViewModel.kt b/stream-chat-android-ui-components/src/main/kotlin/io/getstream/chat/android/ui/viewmodel/messages/MessageListViewModel.kt
index 6aea34159f1..a9cbacaa90e 100644
--- a/stream-chat-android-ui-components/src/main/kotlin/io/getstream/chat/android/ui/viewmodel/messages/MessageListViewModel.kt
+++ b/stream-chat-android-ui-components/src/main/kotlin/io/getstream/chat/android/ui/viewmodel/messages/MessageListViewModel.kt
@@ -213,7 +213,7 @@ public class MessageListViewModel(
     /**
      * Handles an [Event] coming from the View layer.
      */
-    @Suppress("LongMethod", "ComplexMethod")
+    @Suppress("LongMethod", "ComplexMethod", "DEPRECATION")
     public fun onEvent(event: Event) {
         logger.v { "[onEvent] event: $event" }
         when (event) {
@@ -735,6 +735,11 @@ public class MessageListViewModel(
          *
          * @param userId The ID of the user to un-flag.
          */
+        @Deprecated(
+            message = "The backend no longer supports un-flagging. This call does nothing and will be removed " +
+                "in the next major version.",
+            level = DeprecationLevel.WARNING,
+        )
         public data class UnflagUser(val userId: String) : Event()
 
         /**