diff --git a/pkgs/clan-cli/tests/temporary_dir.py b/pkgs/clan-cli/tests/temporary_dir.py
index 0b16c3fc1..026998206 100644
--- a/pkgs/clan-cli/tests/temporary_dir.py
+++ b/pkgs/clan-cli/tests/temporary_dir.py
@@ -21,6 +21,7 @@ def temporary_home(monkeypatch: pytest.MonkeyPatch) -> Iterator[Path]:
     else:
         with tempfile.TemporaryDirectory(prefix="pytest-") as dirpath:
             monkeypatch.setenv("HOME", str(dirpath))
+            monkeypatch.setenv("XDG_DATA_HOME", str(Path(dirpath) / ".local/share"))
             monkeypatch.chdir(str(dirpath))
             log.debug("Temp HOME directory: %s", str(dirpath))
             yield Path(dirpath)