diff --git a/tests/test_agentuniverse/unit/agent/action/tool/test_arxiv_tool.py b/tests/test_agentuniverse/unit/agent/action/tool/test_arxiv_tool.py
index fa961acb..39d1b7d6 100644
--- a/tests/test_agentuniverse/unit/agent/action/tool/test_arxiv_tool.py
+++ b/tests/test_agentuniverse/unit/agent/action/tool/test_arxiv_tool.py
@@ -46,3 +46,4 @@ class ArxivToolTest(unittest.TestCase):
 
 if __name__ == '__main__':
     unittest.main()
+