diff --git a/stream_chat/async_chat/client.py b/stream_chat/async_chat/client.py
index b50579b..6e528e7 100644
--- a/stream_chat/async_chat/client.py
+++ b/stream_chat/async_chat/client.py
@@ -333,6 +333,9 @@ async def update_message_partial(
     async def delete_message(self, message_id: str, **options: Any) -> StreamResponse:
         return await self.delete(f"messages/{message_id}", options)
 
+    def undelete_message(self, message_id: str, user_id: str) -> StreamResponse:
+        return await self.post(f"messages/{message_id}/undelete", data={"user": user_id})
+
     async def get_message(self, message_id: str, **options: Any) -> StreamResponse:
         return await self.get(f"messages/{message_id}", options)
 
diff --git a/stream_chat/base/client.py b/stream_chat/base/client.py
index 2a8db10..126e325 100644
--- a/stream_chat/base/client.py
+++ b/stream_chat/base/client.py
@@ -515,6 +515,15 @@ def delete_message(
         """
         pass
 
+    @abc.abstractmethod
+    def undelete_message(
+        self, message_id: str, user_id: str
+    ) -> Union[StreamResponse, Awaitable[StreamResponse]]:
+        """
+        Undeletes a message.
+        """
+        pass
+
     @abc.abstractmethod
     def get_message(
         self, message_id: str, **options: Any
diff --git a/stream_chat/client.py b/stream_chat/client.py
index 55829bc..e9cfc0a 100644
--- a/stream_chat/client.py
+++ b/stream_chat/client.py
@@ -322,6 +322,11 @@ def update_message_partial(
     def delete_message(self, message_id: str, **options: Any) -> StreamResponse:
         return self.delete(f"messages/{message_id}", options)
 
+    def undelete_message(self, message_id: str, user_id: str) -> StreamResponse:
+        return self.post(
+            f"messages/{message_id}/undelete", data={"undeleted_by": user_id}
+        )
+
     def get_message(self, message_id: str, **options: Any) -> StreamResponse:
         return self.get(f"messages/{message_id}", options)