diff --git a/README.md b/README.md
index cfc35f4..4b15e9a 100644
--- a/README.md
+++ b/README.md
@@ -428,6 +428,7 @@ Besides libraries, there're [Collection on Codepen](http://codepen.io/collection
 
 * [velocity](https://github.com/julianshapiro/velocity) - Accelerated JavaScript animation.
 * [jquery.transit](https://github.com/rstacruz/jquery.transit) - Super-smooth CSS3 transformations and transitions for jQuery.
+* [GreenSock-JS](https://github.com/greensock/GreenSock-JS) - High-performance HTML5 animations that work in all major browsers.
 
 
 # Other Awesome Lists