diff --git a/book/external/Nested-Books b/book/external/Nested-Books
index cc1d35d..60b4678 160000
--- a/book/external/Nested-Books
+++ b/book/external/Nested-Books
@@ -1 +1 @@
-Subproject commit cc1d35d73558dc5787ede7c4552fb35e9ba82a46
+Subproject commit 60b467844b5f00f59e4d9f9a2e2dbc7e80534706