diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index f2ca4fe08..60ef278e8 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -175,6 +175,7 @@ This document generated by [dt-contributors-generator](https://github.com/vvakam
 * [:link:](es6-promise/es6-promise.d.ts) [es6-promise](https://github.com/jakearchibald/ES6-Promise) by [François de Campredon](https://github.com/fdecampredon), [vvakame](https://github.com/vvakame)
 * [:link:](esprima/esprima.d.ts) [Esprima](http://esprima.org) by [teppeis](https://github.com/teppeis)
 * [:link:](eventemitter2/eventemitter2.d.ts) [EventEmitter2](https://github.com/asyncly/EventEmitter2) by [ryiwamoto](https://github.com/ryiwamoto)
+* [:link:](event-loop-lag/event-loop-lag.d.ts) [event-loop-lag](https://github.com/pebble/event-loop-lag) by [rogierschouten](https://github.com/rogierschouten)
 * [:link:](exit/exit.d.ts) [exit](https://github.com/cowboy/node-exit) by [Bart van der Schoor](https://github.com/Bartvds)
 * [:link:](expect.js/expect.js.d.ts) [expect.js](https://github.com/LearnBoost/expect.js) by [Teppei Sato](https://github.com/teppeis)
 * [:link:](expectations/expectations.d.ts) [expectations.js](https://github.com/spmason/expectations) by [vvakame](https://github.com/vvakame)
diff --git a/event-loop-lag/event-loop-lag-tests.ts b/event-loop-lag/event-loop-lag-tests.ts
new file mode 100644
index 000000000..8e20879af
--- /dev/null
+++ b/event-loop-lag/event-loop-lag-tests.ts
@@ -0,0 +1,6 @@
+/// <reference path="event-loop-lag.d.ts" />
+
+import lag = require("event-loop-lag");
+
+var fn: () => number = lag(1000);
+var n: number = fn();
diff --git a/event-loop-lag/event-loop-lag.d.ts b/event-loop-lag/event-loop-lag.d.ts
new file mode 100644
index 000000000..199babd37
--- /dev/null
+++ b/event-loop-lag/event-loop-lag.d.ts
@@ -0,0 +1,14 @@
+// Type definitions for event-loop-lag 1.0.3
+// Project: https://github.com/pebble/event-loop-lag
+// Definitions by: Rogier Schouten <https://github.com/rogierschouten>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+declare module "event-loop-lag" {
+	
+	/**
+	 * Accepts a number of milliseconds representing how often to refresh the event loop lag measurement and returns a function you can call to receive the latest lag measurement in milliseconds.
+	 */
+	function lag(interval: number): () => number;
+	
+	export = lag;	
+}