diff --git a/backend/app/api/routes/cloud.py b/backend/app/api/routes/cloud.py
index 088664c..61ce6c6 100644
--- a/backend/app/api/routes/cloud.py
+++ b/backend/app/api/routes/cloud.py
@@ -9,7 +9,7 @@ from __future__ import annotations
 
 import asyncio
 import logging
-from datetime import UTC, datetime
+from datetime import datetime, timezone
 from typing import Any
 
 import httpx
@@ -105,7 +105,7 @@ async def enroll(
         # talking to. Nothing refreshes this.
         jwks=data["jwks"],
         local_user_id=str(current_user.id),
-        enrolled_at=datetime.now(UTC).isoformat(),
+        enrolled_at=datetime.now(timezone.utc).isoformat(),
         portal_account=current_user.email,
     )
     cloud_config.save(config)