diff --git a/api/python/tests/integration/test_packages.py b/api/python/tests/integration/test_packages.py
index eb1adbf83ba..b6d686207b0 100644
--- a/api/python/tests/integration/test_packages.py
+++ b/api/python/tests/integration/test_packages.py
@@ -450,7 +450,7 @@ def test_fetch_default_dest(tmpdir):
             copy_mock.assert_called_once_with(
                 PhysicalKey.from_path(filepath),
                 PhysicalKey.from_path('foo.txt'),
-                put_options=None
+                put_options=None,
             )
 
     @patch('quilt3.workflows.validate', mock.MagicMock(return_value=None))
diff --git a/api/python/tests/test_bucket.py b/api/python/tests/test_bucket.py
index 0a5dbf42fe4..1b80c99e87c 100644
--- a/api/python/tests/test_bucket.py
+++ b/api/python/tests/test_bucket.py
@@ -179,7 +179,9 @@ def test_bucket_put_file(self):
 
             copy_mock.assert_called_once_with(
                 PhysicalKey.from_path('README'),
-                PhysicalKey.from_url('s3://test-bucket/README.md'), put_options=opts)
+                PhysicalKey.from_url('s3://test-bucket/README.md'),
+                put_options=opts,
+            )
 
     def test_bucket_put_dir(self):
         path = pathlib.Path(__file__).parent / 'data'