diff --git a/tests/test_pipdeptree.py b/tests/test_pipdeptree.py
index 372b937..294c9b6 100644
--- a/tests/test_pipdeptree.py
+++ b/tests/test_pipdeptree.py
@@ -33,6 +33,6 @@ def test_main_log_resolved(tmp_path: Path, mocker: MockFixture, capsys: pytest.C
     )
 
     main()
-    
+
     captured = capsys.readouterr()
     assert captured.err.startswith(f"(resolved python: {tmp_path!s}")