diff --git a/swh/web/tests/test_gunicorn_config.py b/swh/web/tests/test_gunicorn_config.py
--- a/swh/web/tests/test_gunicorn_config.py
+++ b/swh/web/tests/test_gunicorn_config.py
@@ -32,6 +32,7 @@
         dsn='test_dsn',
         integrations=[django_integration],
         debug=False,
+        release=None,
     )
 
 
@@ -48,4 +49,5 @@
         dsn='test_dsn',
         integrations=[django_integration],
         debug=True,
+        release=None,
     )