diff --git a/pkgs/clan-cli/tests/test_cli.py b/pkgs/clan-cli/tests/test_cli.py
index a02c03933..3c61bee0b 100644
--- a/pkgs/clan-cli/tests/test_cli.py
+++ b/pkgs/clan-cli/tests/test_cli.py
@@ -4,7 +4,7 @@ import clan_cli
 import pytest
 
 
-def test_no_args(capsys):
+def test_no_args(capsys: pytest.CaptureFixture) -> None:
     clan_cli.main()
     captured = capsys.readouterr()
     assert captured.out.startswith("usage:")