diff --git a/lib/rt64 b/lib/rt64
index a0a0f94..40ce864 160000
--- a/lib/rt64
+++ b/lib/rt64
@@ -1 +1 @@
-Subproject commit a0a0f94a01cc4895836abd23760c8b9591968045
+Subproject commit 40ce8645a936a870466aac08e90935925e6a3c39