diff --git a/.gitignore b/.gitignore
index 96acae7..e74e37f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 node_modules
 examples/**/public/*
 npm-debug.log
+package-lock.json
\ No newline at end of file
diff --git a/index.js b/index.js
index fa5f284..d5d4f34 100644
--- a/index.js
+++ b/index.js
@@ -4,6 +4,7 @@ var rimraf = require('rimraf')
 var webpack = require('webpack')
 var defaults = require('lodash.defaults')
 var ExtractTextPlugin = require('extract-text-webpack-plugin')
+var UglifyJsPlugin = require('uglifyjs-webpack-plugin')
 var containsPath = require('contains-path')
 var getBaseConfig = require('./lib/base-config')
 var getPackage = require('./lib/get-package')
@@ -41,11 +42,7 @@ module.exports = function (opts) {
     clearBeforeBuild: false,
     serveCustomHtmlInDev: true,
     devServer: {},
-    uglify: defaults(opts.uglify || {}, {
-      output: {
-        comments: false
-      }
-    })
+    uglify: opts.uglify
   })
 
   spec.package = getPackage(spec.package)
@@ -146,7 +143,7 @@ module.exports = function (opts) {
 
     // minify in production
     config.plugins.push(
-      new webpack.optimize.UglifyJsPlugin(spec.uglify),
+      new UglifyJsPlugin(spec.uglify),
       new ExtractTextPlugin({
         filename: spec.output.cssFilename,
         allChunks: true
diff --git a/package.json b/package.json
index d0ec969..a2e9788 100644
--- a/package.json
+++ b/package.json
@@ -10,24 +10,25 @@
     "url": "https://github.com/henrikjoreteg/hjs-webpack/issues"
   },
   "dependencies": {
-    "compression": "^1.6.2",
-    "connect-history-api-fallback": "^1.2.0",
-    "contains-path": "^0.1.0",
-    "express": "^4.14.0",
-    "extract-text-webpack-plugin": "^2.1.0",
-    "find-root": "^1.0.0",
-    "http-proxy-middleware": "^0.17.0",
-    "lodash.assign": "^4.0.6",
-    "lodash.defaults": "^4.0.1",
-    "lodash.pick": "^4.1.0",
-    "rimraf": "^2.5.2",
-    "webpack": "^2.2.1",
-    "webpack-dev-middleware": "^1.10.0",
-    "webpack-hot-middleware": "^2.16.1"
+    "compression": "^1.7.1",
+    "connect-history-api-fallback": "^1.5.0",
+    "contains-path": "^1.0.0",
+    "express": "^4.16.2",
+    "extract-text-webpack-plugin": "^3.0.2",
+    "find-root": "^1.1.0",
+    "http-proxy-middleware": "^0.17.4",
+    "lodash.assign": "^4.2.0",
+    "lodash.defaults": "^4.2.0",
+    "lodash.pick": "^4.4.0",
+    "rimraf": "^2.6.2",
+    "uglifyjs-webpack-plugin": "^1.1.0",
+    "webpack": "^3.8.1",
+    "webpack-dev-middleware": "^1.12.0",
+    "webpack-hot-middleware": "^2.20.0"
   },
   "devDependencies": {
-    "git-validate": "^2.2.0",
-    "standard": "^10.0.0"
+    "git-validate": "^2.2.2",
+    "standard": "^10.0.3"
   },
   "homepage": "https://github.com/henrikjoreteg/hjs-webpack",
   "keywords": [