diff --git a/.github/workflows/backport.yml b/.github/workflows/backport.yml
index 3f80155..4edc60e 100644
--- a/.github/workflows/backport.yml
+++ b/.github/workflows/backport.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Backport Action
-        uses: sorenlouv/backport-github-action@v9.5.1
+        uses: sorenlouv/backport-github-action@ad888e978060bc1b2798690dd9d03c4036560947 # v9.5.1
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}