diff --git a/tests/test_main.py b/tests/test_main.py
index 3f10115..c8317ce 100644
--- a/tests/test_main.py
+++ b/tests/test_main.py
@@ -10,7 +10,12 @@
 @patch("main.os")
 def test_main(mock_os, mock_compare_app, mock_compare_compose):
     """Test the main method runs correctly."""
-    mock_os.environ.get.side_effect = [Path("app"), Path("compose"), Path("workspace"), []]
+    mock_os.environ.get.side_effect = [
+        Path("app"),
+        Path("compose"),
+        Path("workspace"),
+        [],
+    ]
 
     with patch("builtins.open", mock_open(read_data="1.0.0")):
         main()