diff --git a/testbench/common.py b/testbench/common.py
index 5f7e2433..be43cb6b 100644
--- a/testbench/common.py
+++ b/testbench/common.py
@@ -922,6 +922,7 @@ def get_stall_uploads_after_bytes(
 
     return 0, 0, ""
 
+
 def get_retry_uploads_error_after_bytes(
     database, request, context=None, transport="HTTP"
 ):
diff --git a/tests/test_testbench_retry.py b/tests/test_testbench_retry.py
index 202d7436..ebc0d8f4 100644
--- a/tests/test_testbench_retry.py
+++ b/tests/test_testbench_retry.py
@@ -675,7 +675,7 @@ def test_write_retry_test_stall_after_bytes(self):
                     }
                 }
             ),
-            content_type="application/json"
+            content_type="application/json",
         )
         self.assertEqual(response.status_code, 200)
         self.assertTrue(
@@ -761,6 +761,7 @@ def test_write_retry_test_stall_after_bytes(self):
         self.assertLess(elapsed_time, 1)
         self.assertEqual(response.status_code, 200, msg=response.data)
 
+
 class TestTestbenchRetryGrpc(unittest.TestCase):
     def setUp(self):
         rest_server.db.clear()