diff --git a/.github/workflows/book.yml b/.github/workflows/book.yml
index c7c679d8a..57fdd73c2 100644
--- a/.github/workflows/book.yml
+++ b/.github/workflows/book.yml
@@ -5,7 +5,7 @@ on:
   push:
     branches:
       - main
-  pull_request:
+  pull_request_target:
     branches:
       - main