diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 5091924..f546dad 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -1,8 +1,10 @@
 name: CI
 
 'on':
-  - push
-  - pull_request
+  push:
+    branches:
+      - main
+  pull_request:
 
 jobs:
   build:
@@ -20,6 +22,14 @@ jobs:
         with:
           node-version: ${{ steps.node_version.outputs.NODE_VERSION }}
 
+      - name: Cache dependencies
+        uses: actions/cache@v2
+        with:
+          path: ~/.npm
+          key: ${{ runner.os }}-node-${{ steps.node_version.outputs.NODE_VERSION }}-${{ hashFiles('**/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-node-${{ steps.node_version.outputs.NODE_VERSION }}
+
       - run: npm ci
         name: Install
 
diff --git a/.github/workflows/deploy.yaml b/.github/workflows/deploy.yaml
new file mode 100644
index 0000000..773bdd0
--- /dev/null
+++ b/.github/workflows/deploy.yaml
@@ -0,0 +1,42 @@
+name: Deploy
+
+'on':
+  push:
+    branches:
+      - main
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Read .nvmrc
+        id: node_version
+        run: echo ::set-output name=NODE_VERSION::$(cat .nvmrc)
+
+      - name: Set up node
+        uses: actions/setup-node@v2
+        with:
+          node-version: ${{ steps.node_version.outputs.NODE_VERSION }}
+
+      - name: Cache dependencies
+        uses: actions/cache@v2
+        with:
+          path: ~/.npm
+          key: ${{ runner.os }}-node-${{ steps.node_version.outputs.NODE_VERSION }}-${{ hashFiles('**/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-node-${{ steps.node_version.outputs.NODE_VERSION }}
+
+      - run: npm ci
+        name: Install
+
+      - run: npm run build
+        name: Build
+
+      - name: Deploy to gh-pages
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./public