diff --git a/packages/jupyter-ai/jupyter_ai/tests/test_handlers.py b/packages/jupyter-ai/jupyter_ai/tests/test_handlers.py
index 4833296e8..d2e73ce6c 100644
--- a/packages/jupyter-ai/jupyter_ai/tests/test_handlers.py
+++ b/packages/jupyter-ai/jupyter_ai/tests/test_handlers.py
@@ -89,7 +89,13 @@ def chat_client():
 
 @pytest.fixture
 def human_chat_message(chat_client):
-    return HumanChatMessage(id="test", time=0, body="test message", prompt="test message", client=chat_client)
+    return HumanChatMessage(
+        id="test",
+        time=0,
+        body="test message",
+        prompt="test message",
+        client=chat_client,
+    )
 
 
 def test_learn_index_permissions(tmp_path):