diff --git a/contrib/mbuild b/contrib/mbuild
index f32bc9b..c40618a 160000
--- a/contrib/mbuild
+++ b/contrib/mbuild
@@ -1 +1 @@
-Subproject commit f32bc9b31f9fc5a0be3dc88cd2086b70270295ab
+Subproject commit c40618acd549e6ae2569a84eaf0407f64dc7b6b2