diff --git a/lib/rt64 b/lib/rt64
index 3607aa0..b66eca4 160000
--- a/lib/rt64
+++ b/lib/rt64
@@ -1 +1 @@
-Subproject commit 3607aa0bca8c0fc4a3d3dbd6dc8d31091bb5fcb1
+Subproject commit b66eca4d45e6ed242f4aae7b44ef87eb0ba172db