diff --git a/.github/workflows/buildbook.yaml b/.github/workflows/buildbook.yaml
index 6a16b5a..4bac88f 100644
--- a/.github/workflows/buildbook.yaml
+++ b/.github/workflows/buildbook.yaml
@@ -91,11 +91,9 @@ jobs:
         with:
           name: html
           path: html
-      - name: set CNAME
-        run: |
-          printf "howto.eurec4a.eu" > _build/html/CNAME
       - name: Publish book on github pages
         uses: peaceiris/actions-gh-pages@v3
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: html
+          cname: howto.eurec4a.eu