diff --git a/build/grunt.js b/build/grunt.js
index 379a815ac2..e391b9443c 100644
--- a/build/grunt.js
+++ b/build/grunt.js
@@ -128,6 +128,7 @@ module.exports = function(grunt) {
         sourceMapIn: 'build/temp/video.js.map',
         sourceMapRoot: '../../src/js',
         preserveComments: 'some',
+        screwIE8: false,
         mangle: true,
         compress: {
           sequences: true,
diff --git a/package.json b/package.json
index 9e7c69720a..fb25a79182 100644
--- a/package.json
+++ b/package.json
@@ -59,7 +59,7 @@
     "grunt-contrib-cssmin": "~0.6.0",
     "grunt-contrib-jshint": "~0.11.3",
     "grunt-contrib-less": "~0.6.4",
-    "grunt-contrib-uglify": "~0.11.0",
+    "grunt-contrib-uglify": "^2.0.0",
     "grunt-contrib-watch": "~0.1.4",
     "grunt-coveralls": "^1.0.0",
     "grunt-exorcise": "^1.0.1",