diff --git a/lib/rt64 b/lib/rt64
index ca347e1..55ffc5e 160000
--- a/lib/rt64
+++ b/lib/rt64
@@ -1 +1 @@
-Subproject commit ca347e15bda28cca904923247217dc4853d9907d
+Subproject commit 55ffc5e786b47e9139cf175c3cc3af62d56d5d31