diff --git a/tests/conftest.py b/tests/conftest.py
index c6403ba8..8b1297f4 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,9 +1,10 @@
 import pytest
 
+from tests import tasks
 
-@pytest.fixture
-def default_worker_tasks(default_worker_tasks: set) -> set:
-    from tests import tasks
 
+@pytest.fixture
+def default_worker_tasks():
+    default_worker_tasks = set()
     default_worker_tasks.add(tasks)
     return default_worker_tasks