diff --git a/.github/workflows/deploy_bookdown.yml b/.github/workflows/deploy_bookdown.yml
index 9c9df37..46f041a 100644
--- a/.github/workflows/deploy_bookdown.yml
+++ b/.github/workflows/deploy_bookdown.yml
@@ -41,8 +41,8 @@ jobs:
    runs-on: ubuntu-latest
    needs: bookdown
    steps:
-     - name: Checkout to master
-       uses: actions/checkout@master
+     - name: Checkout repository
+       uses: actions/checkout@v3
        
      - name: Download artifact
        uses: actions/download-artifact@v3
@@ -53,7 +53,7 @@ jobs:
          path: _book # optional
 
      - name: Deploy to GitHub Pages
-       uses: Cecilapp/GitHub-Pages-deploy@master
+       uses: Cecilapp/GitHub-Pages-deploy@v3
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with: