diff --git a/.github/workflows/gh-pages.yaml b/.github/workflows/gh-pages.yaml
index 9996c35..11d804d 100644
--- a/.github/workflows/gh-pages.yaml
+++ b/.github/workflows/gh-pages.yaml
@@ -19,7 +19,7 @@ jobs:
     concurrency:
       group: ${{ github.workflow }}-${{ github.ref }}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Read .env
         id: mdbook-version
         run: |