diff --git a/lib/rt64 b/lib/rt64
index 46a873c..b20b7ba 160000
--- a/lib/rt64
+++ b/lib/rt64
@@ -1 +1 @@
-Subproject commit 46a873cf7c6afb22e735898fbacdeba1b0daba8b
+Subproject commit b20b7ba373f1d9439a1082cd7d211d1158034584