diff --git a/tests/gateway/test_msgraph_webhook.py b/tests/gateway/test_msgraph_webhook.py
index a731e9287da..ca9d603c697 100644
--- a/tests/gateway/test_msgraph_webhook.py
+++ b/tests/gateway/test_msgraph_webhook.py
@@ -1,6 +1,7 @@
 """Tests for the Microsoft Graph webhook adapter."""
 
 import asyncio
+import json
 
 import pytest