diff --git a/.github/workflows/trigger-site-build.yaml b/.github/workflows/trigger-site-build.yaml
index a22b14f0..118d0bec 100644
--- a/.github/workflows/trigger-site-build.yaml
+++ b/.github/workflows/trigger-site-build.yaml
@@ -7,5 +7,5 @@ jobs:
     uses: ProjectPythia/cookbook-actions/.github/workflows/build-book.yaml@main
     with:
       artifact_name: book-zip-${{ github.event.number }}
-      base_url: ''
+      base_url: '/${{ github.event.repository.name }}/_preview/${{ github.event.number }}'
       # Other input options are possible, see ProjectPythia/cookbook-actions/.github/workflows/build-book.yaml