diff --git a/gulpfile.babel.js b/gulpfile.babel.js
index 881a93442..71359468c 100644
--- a/gulpfile.babel.js
+++ b/gulpfile.babel.js
@@ -145,7 +145,9 @@ gulp.task('html', () => {
       removeEmptyAttributes: true,
       removeScriptTypeAttributes: true,
       removeStyleLinkTypeAttributes: true,
-      removeOptionalTags: true
+      removeOptionalTags: true,
+      minifyCSS: true,
+      minifyJS: true
     })))
     // Output files
     .pipe($.if('*.html', $.size({title: 'html', showFiles: true})))
diff --git a/package.json b/package.json
index 5670e1edc..27cc935a6 100644
--- a/package.json
+++ b/package.json
@@ -11,6 +11,7 @@
     "gulp-babel": "^6.1.2",
     "gulp-cache": "^0.4.5",
     "gulp-concat": "^2.6.0",
+    "gulp-clean-css": "^3.9.4",
     "gulp-cssnano": "^2.1.2",
     "gulp-eslint": "^1.1.1",
     "gulp-htmlmin": "^2.0.0",