diff --git a/.github/workflows/autoformat.yml b/.github/workflows/autoformat.yml
index 95bb459..289e101 100644
--- a/.github/workflows/autoformat.yml
+++ b/.github/workflows/autoformat.yml
@@ -13,9 +13,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
-          ref: ${{ github.head_ref }}
+          ref: ${{ github.event.pull_request.head.sha }}
       - name: Prettify
         uses: creyD/prettier_action@v4.2
         with: