diff --git a/src/_zkapauthorizer/tests/test_client_resource.py b/src/_zkapauthorizer/tests/test_client_resource.py
index 3ada6f6aef6e88eaa8a016779a8af43841e6136b..61e741112e376d771107b90c17bdaf0ae7455e98 100644
--- a/src/_zkapauthorizer/tests/test_client_resource.py
+++ b/src/_zkapauthorizer/tests/test_client_resource.py
@@ -292,6 +292,7 @@ class OpenAPITests(TestCase):
     """
     Tests for the OpenAPI specification for the HTTP API.
     """
+
     def test_backup_recovery_valid(self):
         """
         The specification document is valid OpenAPI 3.0.