diff --git a/README.md b/README.md
index f427fe2..6bfdd03 100644
--- a/README.md
+++ b/README.md
@@ -9,13 +9,14 @@ Build up your application through simple interfaces and re-use your application
 
 * Supports the RFC6455, HyBi-10+, and Hixie76 protocol versions (at the same time)
 * Tested on Chrome 13 - 20, Firefox 6 - 12, Safari 5.0.1+, iOS 4.2, iOS 5
+* Ratchet [passes](http://socketo.me/reports/ab/) the [Autobahn Testsuite](http://autobahn.ws/testsuite) (non-binary messages)
 
 ##Requirements
 
 Shell access is required and a dedicated machine with root access is recommended.
 To avoid proxy/firewall blockage it's recommended WebSockets are run on port 80, which requires root access.
 Note that you can not run two applications (Apache and Ratchet) on the same port, thus the requirement for a separate machine (for now).
-PHP 5.3.2 (or higher) is required with mbstring enabled (*--enable-mbstring* flag during compile time). PHP5.4 is recommended for its performance improvements. 
+PHP 5.3.3 (or higher) is required. If you have access, PHP5.4 is recommended for its performance improvements. 
 
 Cookies from your domain will be passed to the socket server, allowing you to identify users.
 Accessing your website's session data in Ratchet requires you to use [Symfony2 Sessions](http://symfony.com/doc/master/components/http_foundation/sessions.html) on your website. 
diff --git a/composer.json b/composer.json
index 82f393a..a6a5221 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
         }
     }
   , "require": {
-        "php": ">=5.3.2"
+        "php": ">=5.3.3"
       , "react/socket": "0.1.*"
       , "guzzle/guzzle": "2.5.*"
       , "symfony/http-foundation": "2.1.*"
diff --git a/composer.lock b/composer.lock
index 7e789f0..e03f350 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1,5 +1,5 @@
 {
-    "hash": "c2963a15ac8c0b7ffee78188dff24cd1",
+    "hash": "6d331b3b6c00e17206dc072901df055e",
     "packages": [
         {
             "package": "evenement/evenement",