Update app/core/db.py

app/core/db.py

@@ -1,3 +1,5 @@
+from datetime import timezone
+
 from motor.motor_asyncio import AsyncIOMotorClient, AsyncIOMotorDatabase
 from pymongo.errors import OperationFailure
 
@@ -9,7 +11,11 @@ _client: AsyncIOMotorClient | None = None
 def get_db() -> AsyncIOMotorDatabase:
     global _client
     if _client is None:
-        _client = AsyncIOMotorClient(settings.mongo_uri)
+        _client = AsyncIOMotorClient(
+            settings.mongo_uri,
+            tz_aware=True,
+            tzinfo=timezone.utc,
+        )
     return _client[settings.mongo_db]