diff --git a/lib/rt64 b/lib/rt64
index e85dad8..64c701c 160000
--- a/lib/rt64
+++ b/lib/rt64
@@ -1 +1 @@
-Subproject commit e85dad87407f49129bb00a8db7bac57e76012b4e
+Subproject commit 64c701cc72a9b747bd99b4ee03898024a3b78431