diff --git a/tools/boostbook b/tools/boostbook
index c220a12c17..719af2337f 160000
--- a/tools/boostbook
+++ b/tools/boostbook
@@ -1 +1 @@
-Subproject commit c220a12c17f6b9689d4cd7efce58736c591481d6
+Subproject commit 719af2337faae26c33a68ed2e424a3afa67486b2