diff --git a/cpp/CHANGELOG.md b/cpp/CHANGELOG.md
index 04ca984858..4e7a4448f2 100644
--- a/cpp/CHANGELOG.md
+++ b/cpp/CHANGELOG.md
@@ -20,7 +20,7 @@ Please mark all change in change log and use the ticket from JIRA.
 - MS-22 - Enhancement for MemVector size control 
 - MS-92 - Unify behavior of debug and release build
 - MS-98 - Install all unit test to installation directory
-
+- MS-115 - Change is_startup of metric_config switch from true to on
 ## New Feature
 
 - MS-57 - Implement index load/search pipeline