diff --git a/Lib9c b/Lib9c
index 2f0960d19..4b5d2122f 160000
--- a/Lib9c
+++ b/Lib9c
@@ -1 +1 @@
-Subproject commit 2f0960d1995467af704e828c88e44ce4ce847177
+Subproject commit 4b5d2122fc5ec9922356ecf52609a62a6c70045a