diff --git a/cpp/CHANGELOG.md b/cpp/CHANGELOG.md
index 47a5ebf6e4..cf501e00d9 100644
--- a/cpp/CHANGELOG.md
+++ b/cpp/CHANGELOG.md
@@ -39,6 +39,7 @@ 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
 
 ## Task