diff --git a/tools/quickbook b/tools/quickbook
index d9c4799a7e..6ac5ab8e68 160000
--- a/tools/quickbook
+++ b/tools/quickbook
@@ -1 +1 @@
-Subproject commit d9c4799a7e6935d07220e3e58c106a391d9c274f
+Subproject commit 6ac5ab8e682d138e6542056e80a2cefcf44c0a9d