diff --git a/.github/actions/build_site/action.yaml b/.github/actions/build_site/action.yaml
index 05927b8188..ad575184be 100644
--- a/.github/actions/build_site/action.yaml
+++ b/.github/actions/build_site/action.yaml
@@ -4,7 +4,7 @@ runs:
   using: composite
   steps:
     - name: Setup Hugo
-      uses: peaceiris/actions-hugo@v2.x
+      uses: peaceiris/actions-hugo@v2.6.0
       with:
         hugo-version: 'latest'
 
diff --git a/.github/actions/deploy_site/action.yaml b/.github/actions/deploy_site/action.yaml
index abc577238e..a7ea1623d2 100644
--- a/.github/actions/deploy_site/action.yaml
+++ b/.github/actions/deploy_site/action.yaml
@@ -8,7 +8,7 @@ runs:
   using: composite
   steps:
     - name: Deploy site
-      uses: peaceiris/actions-gh-pages@v3.x
+      uses: peaceiris/actions-gh-pages@v3.9.0
       with:
         github_token: ${{ env.GITHUB_TOKEN }}
         publish_dir: ${{ env.GITHUB_WORKSPACE }}/../public