diff --git a/lib/rt64 b/lib/rt64
index 85a06e5..6a53f7b 160000
--- a/lib/rt64
+++ b/lib/rt64
@@ -1 +1 @@
-Subproject commit 85a06e5a35d01a7fd9092c27ee34990f15a8007f
+Subproject commit 6a53f7b19ed1dc5cf33118676cbdd2731486f089