diff --git a/Lib9c b/Lib9c
index 9bd7fed45..7a666add2 160000
--- a/Lib9c
+++ b/Lib9c
@@ -1 +1 @@
-Subproject commit 9bd7fed453d59362a9c6234fbb59ad442ba08eba
+Subproject commit 7a666add2f42fdd4ad672e51236ccf2d187f6e0c