diff --git a/.github/workflows/pr-tests.yml b/.github/workflows/pr-tests.yml
index e8198d9..329ae07 100644
--- a/.github/workflows/pr-tests.yml
+++ b/.github/workflows/pr-tests.yml
@@ -13,6 +13,6 @@ jobs:
       - run: pip install poetry
       - run: poetry install
       - run: poetry run mypy .
-      - run: poetry run ruff check .
+      - run: poetry run ruff check --output-format=github .
       - run: poetry run ruff format --check .
       - run: poetry run pytest -v
diff --git a/tests/stubs/calibre.py b/tests/stubs/calibre.py
index 9cc5b62..e14b2e5 100644
--- a/tests/stubs/calibre.py
+++ b/tests/stubs/calibre.py
@@ -1,5 +1,5 @@
-from dataclasses import dataclass, field
 from typing import List, Optional, Union
+from dataclasses import dataclass, field
 
 
 @dataclass