diff --git a/src/backend/langflow/api/v1/schemas.py b/src/backend/langflow/api/v1/schemas.py
index 1ccb79063..9a4df7c4f 100644
--- a/src/backend/langflow/api/v1/schemas.py
+++ b/src/backend/langflow/api/v1/schemas.py
@@ -78,6 +78,7 @@ class ChatMessage(BaseModel):
 
     is_bot: bool = False
     message: Union[str, None, dict] = None
+    chatKey: Optional[str] = None
     type: str = "human"
 
 
diff --git a/src/backend/langflow/services/chat/manager.py b/src/backend/langflow/services/chat/manager.py
index 2a1bb5694..ee4e6a9fc 100644
--- a/src/backend/langflow/services/chat/manager.py
+++ b/src/backend/langflow/services/chat/manager.py
@@ -126,7 +126,8 @@ class ChatService(Service):
     ):
         # Process the graph data and chat message
         chat_inputs = payload.pop("inputs", {})
-        chat_inputs = ChatMessage(message=chat_inputs)
+        chatkey = payload.pop("chatKey", None)
+        chat_inputs = ChatMessage(message=chat_inputs, chatKey=chatkey)
         self.chat_history.add_message(client_id, chat_inputs)
 
         # graph_data = payload