diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..d588c83
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,45 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  test:
+    name: Quality Checks
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 10.8.1
+
+      - name: Setup Node.js 20.12.0
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20.12.0
+          cache: 'pnpm'
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Run linting
+        run: pnpm lint
+
+      - name: Run type checking
+        run: pnpm typecheck
+
+      - name: Build project
+        run: pnpm build
diff --git a/.node-version b/.node-version
index 9d11232..2b9cabc 100644
--- a/.node-version
+++ b/.node-version
@@ -1 +1 @@
-24.4.1
+20.12.0