diff --git a/.github/workflows/sync-ref.yml b/.github/workflows/sync-ref.yml
index 32d09e8..8ae9bc1 100644
--- a/.github/workflows/sync-ref.yml
+++ b/.github/workflows/sync-ref.yml
@@ -26,7 +26,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: check whether the ref is in sync
-        uses: actions/github-script@v8
+        uses: actions/github-script@v9
         id: check
         with:
           script: |
@@ -73,7 +73,7 @@ jobs:
           repositories: ${{ steps.check.outputs.target-repo-name }}
       - name: set authorization header
         if: steps.check.outputs.skip == 'false'
-        uses: actions/github-script@v8
+        uses: actions/github-script@v9
         id: auth
         with:
           script: |
diff --git a/.github/workflows/sync-upstream-branches.yml b/.github/workflows/sync-upstream-branches.yml
index 27bfa62..833a825 100644
--- a/.github/workflows/sync-upstream-branches.yml
+++ b/.github/workflows/sync-upstream-branches.yml
@@ -26,7 +26,7 @@ jobs:
 
     steps:
       - name: check which refs need to be synchronized
-        uses: actions/github-script@v8
+        uses: actions/github-script@v9
         id: check
         with:
           script: |
@@ -131,7 +131,7 @@ jobs:
           repositories: ${{ steps.check.outputs.target-repo-name }}
       - name: set authorization header
         if: steps.check.outputs.refspec != ''
-        uses: actions/github-script@v8
+        uses: actions/github-script@v9
         id: auth
         with:
           script: |