diff --git a/README.md b/README.md
index 6998900..8995454 100644
--- a/README.md
+++ b/README.md
@@ -438,7 +438,7 @@ Besides libraries, there're [Collection on Codepen](http://codepen.io/collection
 * [validate.js](https://github.com/rickharrison/validate.js) - Lightweight JavaScript form validation library inspired by CodeIgniter.
 * [validatr](https://github.com/jaymorrow/validatr/) - Cross Browser HTML5 Form Validation.
 * [BootstrapValidator](https://github.com/nghuuphuoc/bootstrapvalidator) - The best jQuery plugin to validate form fields. Designed to use with Bootstrap 3.
-
+* [is.js](https://github.com/arasatasaygin/is.js) -  Check types, regexps, presence, time and more.
 
 ## Keyboard Wrappers