diff --git a/CHANGELOG.md b/CHANGELOG.md
index 38b4955..c9c1bc0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,9 @@ 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/).
 
+## [0.4.0] - 2016-12-03
+- Added `addPrefixToSelector` option (thanks to [@crossjs](https://github.com/crossjs))
+
 ## [0.3.3] - 2016-12-01
 - Compacted selector levels (thanks to [@crossjs](https://github.com/crossjs))
 
diff --git a/package.json b/package.json
index e8c745f..b30b771 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "postcss-rtl",
-  "version": "0.3.3",
+  "version": "0.4.0",
   "description": "PostCSS plugin for RTL-optimizations",
   "keywords": [
     "postcss",