diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7434cf8..2d97dd1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,3 +30,36 @@ jobs:
 
       - name: Lint & Format
         run: npm run lint && npm run format:check
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+
+      - name: Setup Node.js
+        uses: actions/setup-node@6044e13b5dc448c55e2357c09f80417699197238 # v6.2.0
+        with:
+          node-version: lts/*
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Cache fetched webpack sources
+        uses: actions/cache@1bd1e32a3bdc45362d1e726936510720a7c30a57 # v4.2.0
+        with:
+          path: .cache/webpack
+          key: webpack-sources-${{ hashFiles('versions.json') }}
+
+      - name: Build site
+        run: npm run build
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Upload build output
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
+        with:
+          name: site
+          path: out
+          retention-days: 7