diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index 0adb0ce5..6317127d 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -27,3 +27,4 @@ jobs:
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./book
+          cname: lefthook.dev