diff --git a/node/node-tests.ts b/node/node-tests.ts
index 02566602d..8d67db311 100644
--- a/node/node-tests.ts
+++ b/node/node-tests.ts
@@ -5,6 +5,7 @@ import fs = require("fs");
 import events = require("events");
 import zlib = require("zlib");
 import url = require('url');
+import util = require("util");
 
 assert(1 + 1 - 2 === 0, "The universe isn't how it should.");
 
@@ -50,7 +51,9 @@ url.format({
     query: { q: "you're a lizard, gary" }
 });
 
-
+// Old and new util.inspect APIs
+util.inspect(["This is nice"], false, 5);
+util.inspect(["This is nice"], { colors: true, depth: 5, customInspect: false });
 
 ////////////////////////////////////////////////////
 /// Stream tests : http://nodejs.org/api/stream.html
diff --git a/node/node.d.ts b/node/node.d.ts
index b6043c17c..7aa596483 100644
--- a/node/node.d.ts
+++ b/node/node.d.ts
@@ -1074,6 +1074,13 @@ declare module "stream" {
 }
 
 declare module "util" {
+    export interface InspectOptions {
+        showHidden?: boolean;
+        depth?: number;
+        colors?: boolean;
+        customInspect?: boolean;
+    }
+
     export function format(format: any, ...param: any[]): string;
     export function debug(string: string): void;
     export function error(...param: any[]): void;
@@ -1081,6 +1088,7 @@ declare module "util" {
     export function print(...param: any[]): void;
     export function log(string: string): void;
     export function inspect(object: any, showHidden?: boolean, depth?: number, color?: boolean): string;
+    export function inspect(object: any, options: InspectOptions): string;
     export function isArray(object: any): boolean;
     export function isRegExp(object: any): boolean;
     export function isDate(object: any): boolean;