diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index 01b5025d2..c8368f022 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -205,6 +205,7 @@ All definitions files include a header with the author and editors, so at some p
 * [Modernizr](http://modernizr.com/) (by [Boris Yankov](https://github.com/borisyankov) and [Theodore Brown](https://github.com/theodorejb/))
 * [Moment.js](https://github.com/timrwood/moment) (by [Michael Lakerveld](https://github.com/Lakerfield))
 * [MongoDB](http://mongodb.github.io/node-mongodb-native/) (from TypeScript samples, updated by [Niklas Mollenhauer](https://github.com/nikeee))
+* [mongoose](http://mongoosejs.com/) (by [Hiroki Horiuchi](https://github.com/horiuchi/))
 * [Mousetrap](http://craig.is/killing/mice) (by [Dániel Tar](https://github.com/qcz))
 * [msgpack.js](https://github.com/uupaa/msgpack.js) (by [Shinya Mochizuki](https://github.com/enrapt-mochizuki))
 * [Mustache.js](https://github.com/janl/mustache.js) (by [Boris Yankov](https://github.com/borisyankov))