diff --git a/.github/workflows/book.yml b/.github/workflows/book.yml
index 9aac3b0a48..0c0bf1e053 100644
--- a/.github/workflows/book.yml
+++ b/.github/workflows/book.yml
@@ -4,9 +4,9 @@ name: book
 
 on:
   push:
-    branches: ["**"]
+    branches: [main]
   pull_request:
-    branches: ["**"]
+    branches: [main]
     types: [opened, reopened, synchronize, closed]
   merge_group: