diff --git a/.github/workflows/polish-the-code.yml b/.github/workflows/polish-the-code.yml
index 7709d14..f59e461 100644
--- a/.github/workflows/polish-the-code.yml
+++ b/.github/workflows/polish-the-code.yml
@@ -29,7 +29,7 @@ jobs:
     # Limit the running time
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           ref: ${{ github.event.pull_request.head.sha }} # checkout PR HEAD commit
           fetch-depth: 0 # required for merge-base check
diff --git a/action.yml b/action.yml
index 1a6b5a3..2d9f5bc 100644
--- a/action.yml
+++ b/action.yml
@@ -52,7 +52,7 @@ runs:
       shell: bash
 
     - name: Checkout code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         ref: ${{ github.ref }} # Fetch latest changes (even by previous job)
         fetch-depth: 0 # Fetch all history for all branches and tags. Otherwise github.event.pull_request.base.ref SHA isn't found.