diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 55fb9119b..14c8d05e2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -146,6 +146,23 @@ jobs:
       - run: |
           git diff --exit-code site/_redirects
 
+  gravity:
+    runs-on: ubuntu-latest
+    needs: [build]
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          path: book
+          pattern: online-pdf
+      - uses: pnpm/action-setup@v4
+        with:
+          version: 9
+      - run: ls -las ./book
+      - name: Run Gravity
+        run: pnpm dlx @gravityci/cli "./book/**/*"
+        env:
+          GRAVITY_TOKEN: ${{ secrets.GRAVITY_TOKEN }}
+
   formatter:
     runs-on: ubuntu-latest
     steps: