diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b795107..f6ba52a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,6 +17,8 @@ jobs:
     - uses: actions/checkout@v3
     - uses: actions/setup-python@v3
     - uses: pre-commit/action@v3.0.0
+      with:
+        extra_args: --all-files black --check
 
   test:
     runs-on: ubuntu-latest