diff --git a/CHANGELOG.md b/CHANGELOG.md
index b339eb0..5e509af 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 This CHANGELOG follows the format listed at [Keep A Changelog](http://keepachangelog.com/)
 
 ## Unreleased
+### Changed
+- Update metrics-es-node.rb for Elasticsearch 2.0
 
 ## [0.3.1] - 2015-12-29
 ### Changed