diff --git a/.github/workflows/sphinx-build.yml b/.github/workflows/sphinx-build.yml
index d6ead835..4bcfe0b8 100644
--- a/.github/workflows/sphinx-build.yml
+++ b/.github/workflows/sphinx-build.yml
@@ -2,36 +2,27 @@ name: "Pull Request Docs Check"
 
 on: 
   pull_request:
-    branches: [ master ]
-
+    branches:
+      - master
 
 jobs:
-
   docs:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
     steps:
-
-    - name: Setup the environment
-      uses: actions/checkout@v1
+    - uses: actions/checkout@v2
 
     - name: Create the new documentation
       uses: ammaraskar/sphinx-action@master
       with:
-        docs-folder: "doc/"
-
-    - name: Commit documentation changes
-      run: |
-        git clone https://github.com/mathLab/EZyRB.git --branch gh-pages --single-branch gh-pages
-        cp -r docs/build/html/* gh-pages/
-        cd gh-pages
-        git config --local user.email "action@github.com"
-        git config --local user.name "GitHub Action"
-        git add .
-        git commit -m "Update documentation" -a || true
+        pre-build-command: "python -m pip install pip sphinx_rtd_theme numpy scipy GPy matplotlib -U"
+        docs-folder: "docs/"
 
-    - name: Push changes
-      uses: ad-m/github-push-action@master
+    - name: Deploy
+      uses: peaceiris/actions-gh-pages@v3
       with:
-        branch: gh-pages
-        directory: gh-pages
-        github_token: ${{ secrets.GITHUB_TOKEN }}
+        #github_token: ${{ secrets.GITHUB_TOKEN }}
+        deploy_key: ${{ secrets.DEPLOY_PRIVATE_KEY }}
+        publish_dir: ./docs/build/html
+        allow_empty_commit: true
+        user_name: 'github-actions[bot]'
+        user_email: 'github-actions[bot]@users.noreply.github.com'
diff --git a/docs/source/index.rst b/docs/source/index.rst
index 44cd5e0e..0cc01c68 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -8,6 +8,7 @@ Welcome to EZyRB's documentation!
 
 Easy Reduced Basis method.
 
+test No. 2 by peaceiris
 
 Description
 ^^^^^^^^^^^^