diff --git a/lib/rt64 b/lib/rt64
index b730ab4..64c701c 160000
--- a/lib/rt64
+++ b/lib/rt64
@@ -1 +1 @@
-Subproject commit b730ab47b79bf04d32b0719f9478a9f34cc47518
+Subproject commit 64c701cc72a9b747bd99b4ee03898024a3b78431