diff --git a/cpp/CHANGELOG.md b/cpp/CHANGELOG.md
index 1be1421972..8461041307 100644
--- a/cpp/CHANGELOG.md
+++ b/cpp/CHANGELOG.md
@@ -43,7 +43,7 @@ Please mark all change in change log and use the ticket from JIRA.
 - MS-37 - Add query, cache usage, disk write speed and file data size metrics
 - MS-30 - Use faiss v1.5.2
 - MS-54 - cmake: Change Thrift third party URL to github.com
-- MS-59 - prometheus: add all proposed metrics
+- MS-69 - prometheus: add all proposed metrics
 
 ## Task