diff --git a/.github/workflows/gen.yml b/.github/workflows/gen.yml
new file mode 100644
index 0000000..fecbbd9
--- /dev/null
+++ b/.github/workflows/gen.yml
@@ -0,0 +1,53 @@
+name: Gen
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+  workflow_dispatch:
+    inputs:
+      chromium:
+        description: 'chromium protocol version'
+        required: false
+        default: ''
+      v8:
+        description: 'v8 protocol version'
+        required: false
+        default: ''
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout pdlgen
+      uses: actions/checkout@v2
+      with:
+        path: pdlgen
+
+    - name: Checkout cdproto
+      uses: actions/checkout@v2
+      with:
+        repository: ZekeLu/cdproto
+        fetch-depth: 0
+        path: cdproto
+
+    - name: Set up Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: 1.16.x
+
+    - name: Build and run cdproto-gen
+      working-directory: ./pdlgen
+      run: |
+        go build -v ./...
+        ./cdproto-gen -chromium=${{ github.event.inputs.chromium }} -v8=${{ github.event.inputs.v8 }} -out=../cdproto
+      
+    - name: Commit changes
+      working-directory: ./cdproto
+      run: |
+        git status
+        git add .
+        git commit -m "test"
+      if: github.event == 'workflow_dispatch'