diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 13d9821..5c2694f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -66,6 +66,7 @@ jobs:
 
       - run: npm install idoc@1 -g
       - run: idoc
+      - run: cp -rp assets/social-preview.png dist/assets/
 
       - name: Deploy
         uses: peaceiris/actions-gh-pages@v4