diff --git a/tools/boostbook b/tools/boostbook
index dfc72f6d44..7853cc1d04 160000
--- a/tools/boostbook
+++ b/tools/boostbook
@@ -1 +1 @@
-Subproject commit dfc72f6d44e59a74271087c2f17ff2d8b8946c24
+Subproject commit 7853cc1d04a19cad07ffdee7dc69afc77e87a901