diff --git a/book/_toc.yml b/book/_toc.yml
index aa5ee76..86d7d0c 100644
--- a/book/_toc.yml
+++ b/book/_toc.yml
@@ -53,7 +53,7 @@ parts:
       - file: external/template/README.md
       - file: features/teachbooks
       - file: external/deploy-book-workflow/README.md
-      - file: features/pull_requests_build.md
+      - file: features/pull_request_build.md
       - file: features/local_server
       - file: external/Nested-Books/README.md
       - file: features/update_env