diff --git a/build/gulpfile.common.js b/build/gulpfile.common.js
index b96e4b238f2..69bd955b979 100644
--- a/build/gulpfile.common.js
+++ b/build/gulpfile.common.js
@@ -7,7 +7,7 @@ var path = require('path');
 var gulp = require('gulp');
 var sourcemaps = require('gulp-sourcemaps');
 var filter = require('gulp-filter');
-var minifyCSS = require('gulp-minify-css');
+var minifyCSS = require('gulp-cssnano');
 var uglify = require('gulp-uglify');
 var es = require('event-stream');
 var concat = require('gulp-concat');
diff --git a/package.json b/package.json
index 437eff74bdb..605d357fb4e 100644
--- a/package.json
+++ b/package.json
@@ -47,10 +47,10 @@
     "gulp-azure-storage": "^0.3.0",
     "gulp-bom": "^1.0.0",
     "gulp-concat": "^2.6.0",
+    "gulp-cssnano": "^2.1.0",
     "gulp-filter": "^3.0.0",
     "gulp-insert": "^0.5.0",
     "gulp-json-editor": "^2.2.1",
-    "gulp-minify-css": "^1.2.1",
     "gulp-mocha": "^2.1.3",
     "gulp-remote-src": "^0.4.0",
     "gulp-rename": "^1.2.0",