diff --git a/.yaspellerrc b/.yaspellerrc
index 3b82d7383..cbb57550c 100644
--- a/.yaspellerrc
+++ b/.yaspellerrc
@@ -191,6 +191,10 @@
     "Packt",
     "Libby",
     "LTR",
-    "RTL"
+    "RTL",
+    "Orias",
+    "Oleh",
+    "Kuchuk",
+    "Kalani"
   ]
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c924169da..c6a1ac788 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,22 @@
 # Change Log
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+## 6.0 “Marquis Orias”
+* Remove node.js 0.12 support.
+* Remove deprecated method from PostCSS 4.
+* Insert methods remove child from previous parent, instead of closing.
+* Insert methods and cloning doesn’t clean `raws` anymore.
+* Methods `moveTo`, `moveAfter`, `moveBefore` were deprecated.
+* Options was changed in `Plugin#process(css, processOptions, pluginOptions)`.
+* Add stream parser to reduce memory usage (by Oleh Kuchuk).
+* Add `before()`/`after()` shortcuts for `node.parent.insertBefore(node, x)`.
+* Add `Rule#raws.ownSemicolon` for semicolon after templates for `@apply`.
+* Use `babel-preset-env` to compile npm package.
+* Remove `js-base64` from dependencies (by Roman Dvornov).
+* Fix error message on single `:` in CSS.
+* Move tests to Jest.
+* Clean up test (by Gabriel Kalani).
+
 ## 5.2.17
 * Add `postcss-sass` suggestion to syntax error on `.sass` input.
 
diff --git a/lib/processor.es6 b/lib/processor.es6
index 5ff7e450c..220ee08af 100644
--- a/lib/processor.es6
+++ b/lib/processor.es6
@@ -24,7 +24,7 @@ class Processor {
          *   throw new Error('This plugin works only with PostCSS 5');
          * }
          */
-        this.version = '5.2.17';
+        this.version = '6.0.0';
         /**
          * @member {pluginFunction[]} - Plugins added to this processor.
          *
diff --git a/package.json b/package.json
index 60962e11f..beaa0e3e2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "postcss",
-  "version": "5.2.17",
+  "version": "6.0.0",
   "description": "Tool for transforming styles with JS plugins",
   "engines": {
     "node": ">=4.0.0"