diff --git a/lib/http/routes/index.js b/lib/http/routes/index.js
index 4ff793f..eb00109 100644
--- a/lib/http/routes/index.js
+++ b/lib/http/routes/index.js
@@ -1,6 +1,6 @@
 var querystring = require('querystring'),
     Url = require('url'),
-    sys = require('sys'),
+    util = require('util'),
     MongooseAdmin = require('../../mongoose-admin'),
     Renderer = require('../renderer').Renderer;
 
diff --git a/lib/http/routes/json.js b/lib/http/routes/json.js
index 79f6006..d6c92e8 100644
--- a/lib/http/routes/json.js
+++ b/lib/http/routes/json.js
@@ -1,6 +1,6 @@
 var querystring = require('querystring'),
     Url = require('url'),
-    sys = require('sys'),
+    util = require('util'),
     MongooseAdmin = require('../../mongoose-admin');
 
 exports.login = function(req, res) {
diff --git a/lib/mongoose_admin_audit.js b/lib/mongoose_admin_audit.js
index 942694c..5e298f2 100644
--- a/lib/mongoose_admin_audit.js
+++ b/lib/mongoose_admin_audit.js
@@ -1,7 +1,7 @@
 /** 
  * Module dependencies
  */
-var sys = require('sys'),
+var util = require('util'),
     mongoose = require('mongoose');
 
 function MongooseAdminAudit() {
diff --git a/lib/mongoose_admin_user.js b/lib/mongoose_admin_user.js
index 3d5256f..23d11d8 100644
--- a/lib/mongoose_admin_user.js
+++ b/lib/mongoose_admin_user.js
@@ -1,4 +1,4 @@
-var sys = require('sys'),
+var util = require('util'),
     mongoose = require('mongoose'),
     bcrypt = require('bcrypt');