diff --git a/package.json b/package.json
index eb78e7bc..a21b1d66 100644
--- a/package.json
+++ b/package.json
@@ -98,6 +98,7 @@
     "srcset-loader": "^2.3.0",
     "style-loader": "^0.20.3",
     "toposort-class": "^1.0.1",
+    "uglifyjs-webpack-plugin": "^1.2.4",
     "universal-cookie-express": "^2.1.2",
     "url-loader": "^1.0.1",
     "webpack": "^4.4.1",
diff --git a/src/internals/webpack/features/optimize.js b/src/internals/webpack/features/optimize.js
index 82d76228..e9437a43 100644
--- a/src/internals/webpack/features/optimize.js
+++ b/src/internals/webpack/features/optimize.js
@@ -1,6 +1,6 @@
 // @flow
 
-import webpack from 'webpack';
+import UglifyJsPlugin from 'uglifyjs-webpack-plugin';
 import OfflinePlugin from 'offline-plugin';
 import CompressionPlugin from 'compression-webpack-plugin';
 import BaseFeature from '../BaseFeature';
@@ -48,7 +48,7 @@ export default class OptimizeFeature extends BaseFeature {
         minimize: true,
         minimizer: [
 
-          new webpack.optimize.UglifyJsPlugin({
+          new UglifyJsPlugin({
             parallel: true,
             cache: true,