diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
new file mode 100644
index 0000000..a3f5027
--- /dev/null
+++ b/.github/workflows/ci.yaml
@@ -0,0 +1,27 @@
+name: CI on pull request
+
+on:
+  pull_request
+
+jobs:
+  ci:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install pnpm
+        run: npm install -g pnpm
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version-file: '.node-version'
+          cache: 'pnpm'
+
+      - name: Install dependencies
+        run: pnpm install
+
+      - name: Run tests
+        run: pnpm test
diff --git a/.node-version b/.node-version
new file mode 100644
index 0000000..2bd5a0a
--- /dev/null
+++ b/.node-version
@@ -0,0 +1 @@
+22