diff --git a/tests/test_skyhook_job.py b/tests/test_skyhook_job.py
index 6c4aa0c931..a7842ea904 100644
--- a/tests/test_skyhook_job.py
+++ b/tests/test_skyhook_job.py
@@ -11,10 +11,10 @@
     config_dict = {
         "skyhook": {
             "ceph_config_path": "/tmp/testskyhookjob/ceph.conf",
-            "ceph_data_pool": "cephfs_data"
+            "ceph_data_pool": "cephfs_data",
         }
     }
-    with open('/root/.coffea.toml', 'w') as f:
+    with open("/root/.coffea.toml", "w") as f:
         toml.dump(config_dict, f)
 
     ak.to_parquet(