diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
new file mode 100644
index 0000000..99b7038
--- /dev/null
+++ b/.github/workflows/ci.yaml
@@ -0,0 +1,82 @@
+name: CI
+
+on:
+  push:
+    branches:
+    - "*"
+    - "!gh-pages"
+    tags:
+    - "*"
+  pull_request:
+    branches:
+    - "*"
+    - "!gh-pages"
+
+jobs:
+  test-xamarin:
+    runs-on: macos-12
+    steps:
+    - uses: actions/checkout@v3
+    - uses: actions/setup-dotnet@v3
+      with:
+        global-json-file: ./global.json
+    - working-directory: ./XamarinFormSample
+      run: dotnet format --verify-no-changes
+  test-flutter:
+    runs-on: macos-12
+    steps:
+    - uses: subosito/flutter-action@v2
+      with:
+        flutter-version: '3.10.0'
+        channel: 'stable'
+    - working-directory: flutter-example
+      run: |
+        flutter pub get
+        flutter test
+        flutter analyze --no-fatal-infos
+        dart format --set-exit-if-changed lib
+  xamarin_android:
+    runs-on: macos-12
+    needs: ["test-xamarin"]
+    if: ${{ github.ref == 'refs/heads/main' }}
+    steps:
+    - uses: actions/checkout@v3
+    - uses: actions/setup-node@v3
+      with:
+        node-version: "18.x"
+    - uses: actions/setup-dotnet@v3
+      with:
+        global-json-file: ./global.json
+    - run: npm install -g appcenter-cli
+    - name: Set Xamarin SDK versions
+      run: |
+        # https://github.com/actions/runner-images/blob/main/images/macos/macos-12-Readme.md
+        $VM_ASSETS/select-xamarin-sdk-v2.sh --mono=6.12 --ios=16.2 --android=13.2
+    - name: nuget restore
+      run: |
+        nuget restore ./XamarinFormSample/XamarinFormSample/XamarinFormSample.csproj
+        nuget restore ./XamarinFormSample/XamarinFormSample.Android/XamarinFormSample.Android.csproj
+    - name: Set versionCode
+      run: |
+        VERSION_CODE=$(date +%s)
+        sed -I "" -E 's/android:versionCode="[[:digit:]]+"/android:versionCode="'"$VERSION_CODE"'"/' XamarinFormSample/XamarinFormSample.Android/Properties/AndroidManifest.xml
+    - name: msbuild
+      run: msbuild ./XamarinFormSample/XamarinFormSample.Android/XamarinFormSample.Android.csproj /p:Configuration=Release /t:PackageForAndroid
+    - name: Run zipalign
+      run: |
+        BUILD_TOOLS_VERSION="30.0.3"
+        "$ANDROID_HOME/build-tools/$BUILD_TOOLS_VERSION/zipalign" -p -f -v 4 ./XamarinFormSample/XamarinFormSample.Android/bin/Release/com.authgear.migrate.tool.xamarin.flutter.sample.apk "$RUNNER_TEMP/app-aligned.apk"
+    - name: Run apksigner
+      env:
+        ANDROID_KEYSTORE_PASSWORD: Abcd1234!
+        ANDROID_KEY_ALIAS: main
+        ANDROID_KEY_PASSWORD: Abcd1234!
+      run: |
+        BUILD_TOOLS_VERSION="30.0.3"
+        "$ANDROID_HOME/build-tools/$BUILD_TOOLS_VERSION/apksigner" sign \
+          --ks keystore-main.jks \
+          --ks-key-alias "$ANDROID_KEY_ALIAS" \
+          --ks-pass "pass:$ANDROID_KEYSTORE_PASSWORD" \
+          --key-pass "pass:$ANDROID_KEY_PASSWORD" \
+          --out "$RUNNER_TEMP/app-signed.apk" \
+          "$RUNNER_TEMP/app-aligned.apk"
diff --git a/global.json b/global.json
new file mode 100644
index 0000000..5f04948
--- /dev/null
+++ b/global.json
@@ -0,0 +1,6 @@
+{
+    "sdk": {
+      "version": "6.0.408",
+      "rollForward": "latestPatch"
+    }
+}