diff --git a/Gruntfile.js b/Gruntfile.js
index a58df5ae77..b07bce3f8f 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -278,6 +278,12 @@ var path = require('path'),
                 }
             },
 
+            clean: {
+                build: {
+                    src: ["<%= paths.buildBuild %>/**"]
+                }
+            },
+
             copy: {
                 nightly: {
                     files: [{
@@ -793,6 +799,7 @@ var path = require('path'),
             "concat",
             "uglify",
             "changelog",
+            "clean:build",
             "copy:build",
             "compress:build"
         ]);
diff --git a/package.json b/package.json
index 6404e14234..b126389387 100644
--- a/package.json
+++ b/package.json
@@ -40,6 +40,7 @@
         "grunt-contrib-handlebars": "~0.5.10",
         "grunt-contrib-watch": "~0.5.1",
         "grunt-bump": "~0.0.11",
+        "grunt-contrib-clean": "~0.5.0",
         "grunt-contrib-copy": "~0.4.1",
         "grunt-contrib-compress": "~0.5.2",
         "grunt-contrib-concat": "~0.3.0",