diff --git a/.github/workflows/lock.yml b/.github/workflows/lock.yml
index c2a9b61d..b64e0c0d 100644
--- a/.github/workflows/lock.yml
+++ b/.github/workflows/lock.yml
@@ -11,7 +11,7 @@ jobs:
     if: github.repository_owner == 'pyca'
     runs-on: ubuntu-latest
     steps:
-      - uses: dessant/lock-threads@v4
+      - uses: dessant/lock-threads@v5
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           issue-inactive-days: 90