diff --git a/.github/workflows/pr-auto-update.yml b/.github/workflows/pr-auto-update.yml
index 21309b57..d063aa10 100644
--- a/.github/workflows/pr-auto-update.yml
+++ b/.github/workflows/pr-auto-update.yml
@@ -18,7 +18,7 @@ jobs:
           app-id: ${{ vars.PR_AUTO_UPDATE_CLIENT_ID }}
           private-key: ${{ secrets.PR_AUTO_UPDATE_PRIVATE_KEY }}
 
-      - uses: CSSUoB/pr-auto-updater@v3.0.0
+      - uses: CSSUoB/pr-auto-updater@v4.0.0
         env:
           GITHUB_TOKEN: ${{ steps.generate-token.outputs.token }}
           PR_FILTER: 'labelled'