diff --git a/tests/metagpt/utils/test_file.py b/tests/metagpt/utils/test_file.py
index 2f224e558..b30e6be93 100644
--- a/tests/metagpt/utils/test_file.py
+++ b/tests/metagpt/utils/test_file.py
@@ -23,3 +23,4 @@ async def test_write_and_read_file(root_path: Path, filename: str, content: byte
     assert root_path / filename == full_file_name
     file_data = await File.read(full_file_name)
     assert file_data.decode("utf-8") == content
+