diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
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+++ b/.github/workflows/ci.yml
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+#
+# ci.yml
+#
+# Run tests for all pushed commits and opened pull requests on Github.
+#
+
+name: CI
+on: [push, pull_request]
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    strategy:
+      matrix:
+        node-version: [18.x, 20.x]
+    steps:
+    - name: Clean global cache
+      run: npm cache clean --force
+    - name: Set up Node
+      uses: actions/checkout@v3
+      with:
+        node-version: ${{ matrix.node-version }}
+        cache: 'npm'
+    - name: Install dependencies
+      run: npm install
+    - name: CI build & test
+      run: |
+        npm run build --if-present
+        npm run coverage
+      env:
+        CI: true
+    - name: Coveralls GitHub Action
+      uses: coverallsapp/github-action@v2.2.3
+      with:
+        COVERALLS_REPO_TOKEN: ${{ secrets.ORG_ACTION_TOKEN }}
+        flag-name: node-${{ matrix.node-version }}
+        parallel: true
+  coveralls-finish:
+    name: Coveralls Webhook
+    needs: build
+    if: needs.build.result == 'success'
+    runs-on: ubuntu-latest
+    steps:
+    - name: Coveralls Finished
+      uses: coverallsapp/github-action@v2.2.3
+      with:
+        COVERALLS_REPO_TOKEN: ${{ secrets.ORG_ACTION_TOKEN }}
+        parallel-finished: true
+