diff --git a/aiogram/fsm/storage/pymongo.py b/aiogram/fsm/storage/pymongo.py
index 9e6e19eb..277758fe 100644
--- a/aiogram/fsm/storage/pymongo.py
+++ b/aiogram/fsm/storage/pymongo.py
@@ -57,7 +57,7 @@ class PyMongoStorage(BaseStorage):
 
     async def close(self) -> None:
         """Cleanup client resources and disconnect from MongoDB."""
-        self._client.close()
+        return await self._client.close()
 
     def resolve_state(self, value: StateType) -> Optional[str]:
         if value is None: