diff --git a/book/_config.yml b/book/_config.yml
index 07f2bce0..984d5fe8 100644
--- a/book/_config.yml
+++ b/book/_config.yml
@@ -7,6 +7,7 @@ logo: "./_static/duck_book_logo.svg"
 repository:
   url: https://github.com/best-practice-and-impact/qa-of-code-guidance
   path_to_book: book
+  branch: main
 
 html:
   home_page_in_navbar: false