diff --git a/tests/conftest.py b/tests/conftest.py
index c46c4436..0b6d4f52 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -309,7 +309,7 @@ def mock_logger(app):
     app.logger = real_logger
 
 
-@pytest.fixture
+@pytest.fixture(scope="session", autouse=True)
 def notification_sender(app):
     real_notification_sender = app.notification_sender
     app.notification_sender = FakeNotificationSender()