diff --git a/app/signalr/hub/hub.py b/app/signalr/hub/hub.py
index 92fc90d..3c8fe98 100644
--- a/app/signalr/hub/hub.py
+++ b/app/signalr/hub/hub.py
@@ -99,6 +99,16 @@ class Hub[TState: UserState]:
                 return client
         return default
 
+    def get_before_clients(self, id: str, current_token: str) -> list[Client]:
+        clients = []
+        for client in self.clients.values():
+            if client.connection_id != id:
+                continue
+            if client.connection_token == current_token:
+                continue
+            clients.append(client)
+        return clients
+
     @abstractmethod
     def create_state(self, client: Client) -> TState:
         raise NotImplementedError
@@ -117,6 +127,11 @@ class Hub[TState: UserState]:
         if group_id in self.groups:
             self.groups[group_id].discard(client)
 
+    async def kick_client(self, client: Client) -> None:
+        await self.call_noblock(client, "DisconnectRequested")
+        await client.send_packet(ClosePacket(allow_reconnect=False))
+        await client.connection.close(code=1000, reason="Disconnected by server")
+
     async def add_client(
         self,
         connection_id: str,
diff --git a/app/signalr/router.py b/app/signalr/router.py
index 053117c..1b50fcf 100644
--- a/app/signalr/router.py
+++ b/app/signalr/router.py
@@ -98,6 +98,11 @@ async def connect(
     if error or not client:
         await websocket.close(code=1008)
         return
+
+    connected_clients = hub_.get_before_clients(user_id, id)
+    for connected_client in connected_clients:
+        await hub_.kick_client(connected_client)
+
     await hub_.clean_state(client, False)
     task = asyncio.create_task(hub_.on_connect(client))
     hub_.tasks.add(task)