diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index bb0933af5e..bcf9121870 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -240,7 +240,8 @@ All definitions files include a header with the author and editors, so at some p
 * [Marked](https://github.com/chjj/marked) (by [William Orr](https://github.com/worr))
 * [MathJax](https://github.com/mathjax/MathJax) (by [Roland Zwaga](https://github.com/rolandzwaga))
 * [mCustomScrollbar](https://github.com/malihu/malihu-custom-scrollbar-plugin) (by [Sarah Williams](https://github.com/flurg))
-* [Meteor](https://www.meteor.com) (by [Dave Allen](https://github.com/fullflavedave))
+* [Meteor](https://www.meteor.com) (by [Dave Allen](https://github.com/fullflavedave))
+* [md5.js](http://labs.cybozu.co.jp/blog/mitsunari/2007/07/md5js_1.html) (by [MIZUNE Pine](https://github.com/pine613))
 * [Microsoft Ajax](http://msdn.microsoft.com/en-us/library/ee341002(v=vs.100).aspx) (by [Patrick Magee](https://github.com/pjmagee))
 * [Microsoft Live Connect](http://msdn.microsoft.com/en-us/library/live/hh243643.aspx) (by [John Vilk](https://github.com/jvilk))
 * [Minimatch](https://github.com/isaacs/minimatch) (by [vvakame](https://github.com/vvakame))