diff --git a/src/node/utils/Minify.js b/src/node/utils/Minify.js
index e6b19542..132d63da 100644
--- a/src/node/utils/Minify.js
+++ b/src/node/utils/Minify.js
@@ -23,7 +23,7 @@ var ERR = require("async-stacktrace");
 var settings = require('./Settings');
 var async = require('async');
 var fs = require('fs');
-var cleanCSS = require('clean-css');
+var CleanCSS = require('clean-css');
 var jsp = require("uglify-js").parser;
 var pro = require("uglify-js").uglify;
 var path = require('path');
@@ -411,7 +411,8 @@ function compressJS(values)
 function compressCSS(values)
 {
   var complete = values.join("\n");
-  return cleanCSS.process(complete);
+  var cleanCSS = new CleanCSS({}).minify(complete);
+  return cleanCSS;
 }
 
 exports.minify = minify;
diff --git a/src/package.json b/src/package.json
index 1e85ca53..3d5f5e24 100644
--- a/src/package.json
+++ b/src/package.json
@@ -20,7 +20,7 @@
                       "express"                 : ">3.1.0 <3.9.0",
                       "async"                   : ">=0.9.0",
                       "connect"                 : "2.7.x",
-                      "clean-css"               : ">=0.50.x",
+                      "clean-css"               : ">=2.0.0",
                       "uglify-js"               : ">=2.4.15",
                       "formidable"              : ">=1.0.15",
                       "log4js"                  : ">=0.6.21",