diff --git a/CHANGELOG.md b/CHANGELOG.md
index 434a91846e..a496082f54 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -53,6 +53,7 @@ Please mark all change in change log and use the ticket from JIRA.
 - MS-626 - Refactor DataObj to support cache any type data
 - MS-648 - Improve unittest
 - MS-655 - Upgrade SPTAG
+- \#42 - Put union of index_build_device and search resources to gpu_pool
 
 ## New Feature
 - MS-614 - Preload table at startup