diff --git a/book/external/Nested-Books b/book/external/Nested-Books
index 324e657..9c360cb 160000
--- a/book/external/Nested-Books
+++ b/book/external/Nested-Books
@@ -1 +1 @@
-Subproject commit 324e657ae2261761677e4b0c72256e1e85685ad2
+Subproject commit 9c360cb127d34bd9db651e251292f8df7c944d90