diff --git a/README.md b/README.md
index 87d63920..5b06c0f9 100644
--- a/README.md
+++ b/README.md
@@ -384,6 +384,7 @@ A curated list of amazingly awesome PHP libraries, resources and shiny things.
 * [OAuth2](https://github.com/php-loep/oauth2-server) - An OAuth2 authentication server, resource server and client library.
 * [PHP oAuthLib](https://github.com/Lusitanian/PHPoAuthLib) - Another OAuth library. 
 * [TwitterOAuth](https://github.com/ruudk/twitteroauth) - A Twitter OAuth library.
+* [TwitterSDK](https://github.com/lyrixx/twitter-sdk) - A Twitter SDK, fully tested.
 * [Hawk](https://github.com/dflydev/dflydev-hawk) - A Hawk HTTP authentication library.
 
 ## Markup
@@ -622,4 +623,4 @@ Various resources, such as books, websites and articles, for improving your PHP
 * Collecting Garbage: [1](http://www.php.net/manual/en/features.gc.refcounting-basics.php) [2](http://www.php.net/manual/en/features.gc.collecting-cycles.php) [3](http://www.php.net/manual/en/features.gc.performance-considerations.php) - A series about the PHP garbage collection internals.
 
 # Contributing
-Please see [CONTRIBUTING](https://github.com/ziadoz/awesome-php/blob/master/CONTRIBUTING.md) for details.
\ No newline at end of file
+Please see [CONTRIBUTING](https://github.com/ziadoz/awesome-php/blob/master/CONTRIBUTING.md) for details.