diff --git a/backend/main.py b/backend/main.py
index 4709ca3..f1b5878 100644
--- a/backend/main.py
+++ b/backend/main.py
@@ -11,7 +11,7 @@ import string
 import time
 from concurrent.futures import ThreadPoolExecutor
 from contextlib import asynccontextmanager
-from datetime import datetime
+from datetime import datetime, timezone
 from functools import partial
 from pathlib import Path
 from typing import Optional, List, Dict, Any