diff --git a/CHANGELOG.md b/CHANGELOG.md
index 04d756e..39a597c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,54 @@
 # Changelog
 
+## 0.4.0 (2015-08-09)
+
+* Feature: Resolve relative URIs, add withBase() and resolve()
+  ([#41](https://github.com/clue/php-buzz-react/pull/41), [#44](https://github.com/clue/php-buzz-react/pull/44))
+
+  ```php
+$browser = $browser->withBase('http://example.com/');
+$browser->post('/');
+```
+
+* Feature: Resolve URI template placeholders according to RFC 6570
+  ([#42](https://github.com/clue/php-buzz-react/pull/42), [#44](https://github.com/clue/php-buzz-react/pull/44))
+
+  ```php
+$browser->post($browser->resolve('/{+path}{?version}', array(
+    'path' => 'demo.json',
+    'version' => '4'
+)));
+```
+
+* Feature: Resolve and follow redirects to relative URIs
+  ([#45](https://github.com/clue/php-buzz-react/pull/45))
+
+* Feature / BC break: Simplify Request and Response objects.
+  Remove Browser::request(), use Browser::send() instead.
+  ([#37](https://github.com/clue/php-buzz-react/pull/37))
+  
+  ```php
+// old
+$browser->request('GET', 'http://www.example.com/');
+
+// new
+$browser->send(new Request('GET', 'http://www.example.com/'));
+```
+
+* Feature / Bc break: Enforce absolute URIs via new Uri class
+  ([#40](https://github.com/clue/php-buzz-react/pull/40), [#44](https://github.com/clue/php-buzz-react/pull/44))
+
+* Feature: Add Browser::withSender() method
+  ([#38](https://github.com/clue/php-buzz-react/pull/38))
+
+* Feature: Add Sender::createFromLoopDns() function
+  ([#39](https://github.com/clue/php-buzz-react/pull/39))
+
+* Improve documentation and test suite
+
 ## 0.3.0 (2015-06-14)
 
-* Expose Response object in case of HTTP errors
+* Feature: Expose Response object in case of HTTP errors
   ([#35](https://github.com/clue/php-buzz-react/pull/35))
 
 * Feature: Add experimental `Transaction` options via `Browser`
diff --git a/README.md b/README.md
index 92b6f25..f0e7755 100644
--- a/README.md
+++ b/README.md
@@ -466,7 +466,7 @@ The recommended way to install this library is [through composer](http://getcomp
 ```JSON
 {
     "require": {
-        "clue/buzz-react": "~0.3.0"
+        "clue/buzz-react": "~0.4.0"
     }
 }
 ```
diff --git a/composer.json b/composer.json
index c67a840..71f85e7 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
     "name": "clue/buzz-react",
-    "description": "Simple async HTTP client for fetching URLs, talking to RESTful APIs, downloading, following redirects etc.",
-    "keywords": ["HTTP client", "HTTP requests", "ReactPHP", "async"],
+    "description": "Simple, async HTTP client for concurrently processing any number of HTTP requests, built on top of React PHP",
+    "keywords": ["HTTP client", "HTTP", "ReactPHP", "async"],
     "homepage": "https://github.com/clue/php-buzz-react",
     "license": "MIT",
     "authors": [