diff --git a/pyproject.toml b/pyproject.toml
index cfdd930..391aeb8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -80,3 +80,6 @@ source      = ["pyflowx"]
 exclude_lines = ["if TYPE_CHECKING:", "if __name__ == .__main__.:", "pragma: no cover", "raise NotImplementedError"]
 fail_under    = 100
 show_missing  = true
+
+[tool.pytest.ini_options]
+asyncio_default_fixture_loop_scope = "function"