diff --git a/.github/workflows/deploy_bookdown.yml b/.github/workflows/deploy_bookdown.yml
index 9c8b9f7..843aeec 100644
--- a/.github/workflows/deploy_bookdown.yml
+++ b/.github/workflows/deploy_bookdown.yml
@@ -2,6 +2,9 @@ on:
   push:
      branches:
        - main
+  pull_request:
+     branches:
+       - main
 
 name: renderbook