diff --git a/main.py b/main.py
index 33ea8b3..763554b 100644
--- a/main.py
+++ b/main.py
@@ -40,7 +40,9 @@ class ConnectionManager:
 
     async def broadcast(self, ws_type: WSConnectionType, message: BaseModel):
         broken = set()
-        for ws in self.active_connections[ws_type.value]:
+        conn_list = list(self.active_connections[ws_type.value])
+        for idx in range(len(conn_list)):
+            ws = conn_list[idx]
             try:
                 await ws.send_json(message.model_dump())
             except Exception: