diff --git a/lib/rt64 b/lib/rt64
index b91d6a7..d31543f 160000
--- a/lib/rt64
+++ b/lib/rt64
@@ -1 +1 @@
-Subproject commit b91d6a74410ad9afb1d491cb34d543d648dc06bc
+Subproject commit d31543fba2cd2364df5cfe0b7faaed450e681c2f