diff --git a/CHANGELOG.md b/CHANGELOG.md
index 08dfc0dce..c915d85b9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 All notable changes to this project will be documented in this file.
 I will do my best to guarantee that this project adheres to [Semantic Versioning](http://semver.org/) after 1.0.0, but please do read change log before updating.
 
+## [0.6.0]
+### Changed
+- Updated to Swift 2.3.
+
 ## [0.5.4]
 ## Fixed
 - Fixed a very edge case where `inet_ntoa` does not support multi-thread.
@@ -88,4 +92,4 @@ I will do my best to guarantee that this project adheres to [Semantic Versioning
 - A build-in debug observer to help with debugging.
 
 ### Fixed
-- Chacha20 and Salsa20 encryption are fixed.
\ No newline at end of file
+- Chacha20 and Salsa20 encryption are fixed.