diff --git a/.github/workflows/auto-approve.yml b/.github/workflows/auto-approve.yml
index 11f7552..696b612 100644
--- a/.github/workflows/auto-approve.yml
+++ b/.github/workflows/auto-approve.yml
@@ -11,7 +11,7 @@ jobs:
       pull-requests: write
 
     steps:
-      - uses: hmarr/auto-approve-action@v2
+      - uses: hmarr/auto-approve-action@f0939ea97e9205ef24d872e76833fa908a770363 # v4.0.0
         if: github.actor == 'dependabot[bot]' || github.actor == 'dependabot-preview[bot]' || github.actor == 'renovate[bot]'
         with:
           github-token: '${{ secrets.GITHUB_TOKEN }}'