diff --git a/tests/test_cookiecutter_generation.py b/tests/test_cookiecutter_generation.py
index 664158b5..aa7cc75a 100755
--- a/tests/test_cookiecutter_generation.py
+++ b/tests/test_cookiecutter_generation.py
@@ -167,7 +167,9 @@ def test_black_passes(cookies, context_override):
     result = cookies.bake(extra_context=context_override)
 
     try:
-        sh.black("--check", "--diff", "--exclude", "migrations", _cwd=str(result.project))
+        sh.black(
+            "--check", "--diff", "--exclude", "migrations", _cwd=str(result.project)
+        )
     except sh.ErrorReturnCode as e:
         pytest.fail(e.stdout.decode())