diff --git a/.github/workflows/doc.yml b/.github/workflows/doc.yml
new file mode 100644
index 0000000..f0d6668
--- /dev/null
+++ b/.github/workflows/doc.yml
@@ -0,0 +1,23 @@
+name: doc
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: 3.1
+      - name: Generate document
+        run: gem install -N yard && yard doc
+      - name: Publish Documentation on GitHub Pages
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./doc