diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0a6a11a238ee0f5c1285a605df7b83f14d502ab1..93c33459a22a03e55ec3e71f68695a20b63353f7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## 1.2.3 - 2018-06-14
+### Changed
+- Fixed roundig error in classroom count route
+- Route performance improved
+
 ## 1.2.2 - 2018-05-22
 ### Changed
 - Fixed bug with missing education levels in classroom count