diff --git a/book.json b/book.json
index 161a295..26b3c9d 100644
--- a/book.json
+++ b/book.json
@@ -23,6 +23,7 @@
         "page-treeview",
         "copy-code-button",
         "tbfed-pagefooter",
+        "cuav-chapters",
         "heading-anchors",
         "donate",
         "scripts"