diff --git a/.github/workflows/bun.yml b/.github/workflows/bun.yml
index 2f9ef51..2e68bc3 100644
--- a/.github/workflows/bun.yml
+++ b/.github/workflows/bun.yml
@@ -1,11 +1,24 @@
-name: my-workflow
+name: CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+
+permissions:
+  contents: read
+
 jobs:
-  my-job:
-    name: my-job
+  build:
+    name: Build & Typecheck
     runs-on: ubuntu-latest
+
     steps:
-      - uses: actions/checkout@v4
-      - uses: oven-sh/setup-bun@v2
-      - run: bun install
-      - run: bun index.ts
-      - run: bun run build
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
+      - name: Install dependencies (cached)
+        run: bun install --frozen-lockfile
+      - name: Build
+        run: bun run build