diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index b80689e..41524fc 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -49,6 +49,7 @@ packages = ["app"]
 
 [tool.pytest.ini_options]
 asyncio_mode = "auto"
+asyncio_default_fixture_loop_scope = "function"
 testpaths = ["tests"]
 markers = [
     "integration: marks tests as integration tests requiring PostgreSQL (deselect with '-m \"not integration\"')",