diff --git a/.github/workflows/trigger_build_pkgdown_site.yaml b/.github/workflows/trigger_build_pkgdown_site.yaml
index 2d7da0e..3cd73d6 100644
--- a/.github/workflows/trigger_build_pkgdown_site.yaml
+++ b/.github/workflows/trigger_build_pkgdown_site.yaml
@@ -22,7 +22,8 @@ jobs:
     - name: Configure GitHub CLI
       run: echo "${{ secrets.GITHUB_TOKEN }}" | gh auth login --with-token
 
-    - name: Trigger Build pkgdown site
-      run: gh workflow run "Build pkgdown site"
+      - name: Trigger Build pkgdown site
+      run: |
+        gh workflow run "Build pkgdown site" --ref ${{ github.head_ref }}
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}