diff --git a/README.md b/README.md
index 46b4a72..a1ff047 100644
--- a/README.md
+++ b/README.md
@@ -3,9 +3,9 @@
 node.js bridge library to communicate with java applications through JMX.
 
 [![NPM version](https://badge.fury.io/js/jmx.svg)](http://badge.fury.io/js/jmx)
-[![Code Climate](http://img.shields.io/codeclimate/github/onddo/node-jmx.svg)](https://codeclimate.com/github/onddo/node-jmx)
+[![Code Climate](http://img.shields.io/codeclimate/github/onddo/node-jmx/0.4.0.svg)](https://codeclimate.com/github/onddo/node-jmx)
 [![Build Status](http://img.shields.io/travis/onddo/node-jmx.svg)](https://travis-ci.org/onddo/node-jmx)
-[![Coverage Status](http://img.shields.io/coveralls/onddo/node-jmx.svg)](https://coveralls.io/r/onddo/node-jmx?branch=master)
+[![Coverage Status](http://img.shields.io/coveralls/onddo/node-jmx/0.4.0.svg)](https://coveralls.io/r/onddo/node-jmx?branch=0.4.0)
 
 ## Requirements
 
@@ -187,6 +187,13 @@ $ NODE_DEBUG="jmx" node [...]
 
 ## History
 
+### 0.4.0
+
+* Add #getAttributes method ([issue #7](https://github.com/onddo/node-jmx/pull/7), thanks [@ericbroda](https://github.com/ericbroda)).
+* Update dependencies: `async@~1.3.0`, `java@~0.5.0`.
+* Add node version `0.12` support.
+* Remove node version `0.8` support.
+
 ### 0.3.1
 
 * Remove jshint dependency from *package.json*.
diff --git a/package.json b/package.json
index c164483..71faa78 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "jmx",
-  "version": "0.4.0-dev",
+  "version": "0.4.0",
   "description": "Bridge library to communicate with java applications through JMX.",
   "homepage": "http://onddo.github.io/node-jmx",
   "bugs": "https://github.com/onddo/node-jmx/issues",
@@ -29,7 +29,7 @@
   } ],
   "readmeFilename": "README.md",
   "engines": {
-    "node": ">=0.6.0"
+    "node": ">=0.10.0"
   },
   "dependencies": {
     "async": "~1.3.0",