diff --git a/lib/less/index.js b/lib/less/index.js
index 079f8202..ec37017d 100644
--- a/lib/less/index.js
+++ b/lib/less/index.js
@@ -1,5 +1,5 @@
 var path = require('path'),
-    sys = require('sys'),
+    sys = require('util'),
     fs = require('fs');
 
 var less = {
diff --git a/test/less-test.js b/test/less-test.js
index b2349d8f..b7e87827 100644
--- a/test/less-test.js
+++ b/test/less-test.js
@@ -1,6 +1,6 @@
 var path = require('path'),
     fs = require('fs'),
-    sys = require('sys');
+    sys = require('util');
 
 var less = require('../lib/less');