diff --git a/.github/workflows/deploy_bookdown.yml b/.github/workflows/deploy_bookdown.yml
index ba53f07..bd79e7e 100644
--- a/.github/workflows/deploy_bookdown.yml
+++ b/.github/workflows/deploy_bookdown.yml
@@ -9,8 +9,9 @@ on:
 name: renderbook
 
 permissions:
-  contents: read
+  contents: write
   pages: write
+  gh-pages: write
 
 jobs:
   bookdown: