diff --git a/backend/app/models/user.py b/backend/app/models/user.py
index 67a6d782..5ca30697 100755
--- a/backend/app/models/user.py
+++ b/backend/app/models/user.py
@@ -117,7 +117,7 @@ class User:
         return result["credits_balance"] if result else 0
 
     async def save(self):
-        from datetime import timezone
+        from datetime import datetime, timezone
         db = await get_db()
         now = datetime.now(timezone.utc)
         user_data = {