diff --git a/Lib9c b/Lib9c
index 7bee0e5a8..487fca896 160000
--- a/Lib9c
+++ b/Lib9c
@@ -1 +1 @@
-Subproject commit 7bee0e5a8f67d09c31713c194b87fccff20a3124
+Subproject commit 487fca8967c8f867cf85dd78b17f7e7c84f4efaf