diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index acf6f46..1d6c3c2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -31,5 +31,8 @@ jobs:
         with:
           python-version: "3.12"
 
+      - name: Install project and dev dependencies
+        run: python -m pip install -e '.[dev]'
+
       - name: Run local checks
         run: ./scripts/check.sh
diff --git a/scripts/check.sh b/scripts/check.sh
index f3a0337..1ed2c27 100755
--- a/scripts/check.sh
+++ b/scripts/check.sh
@@ -7,6 +7,9 @@ python -m compileall -q src tests
 printf '\n== unit tests ==\n'
 PYTHONPATH=src python -m unittest discover -s tests -p 'test_*.py'
 
+printf '\n== ruff ==\n'
+python -m ruff check .
+
 printf '\n== text hygiene ==\n'
 python - <<'PY'
 from __future__ import annotations