diff --git a/.github/workflows/stale.yaml b/.github/workflows/stale.yaml
index 1083b6e56..97e021141 100644
--- a/.github/workflows/stale.yaml
+++ b/.github/workflows/stale.yaml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/stale@v9
+    - uses: actions/stale@5bef64f19d7facfb25b37b414482c7164d639639 # v9.1.0
       name: Clean up stale issues and PRs
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}