diff --git a/package.json b/package.json
index f6c9f946..ec32ead2 100644
--- a/package.json
+++ b/package.json
@@ -203,6 +203,7 @@
     "version-io": "^2.0.1",
     "webpack": "^4.0.0",
     "webpack-cli": "^2.0.9",
+    "webpack-merge": "^4.1.2",
     "yaspeller": "^4.0.0"
   },
   "engines": {
diff --git a/webpack.config.js b/webpack.config.js
index 79731814..b663db21 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -1,18 +1,14 @@
 'use strict';
 
-const deepmerge = require('deepmerge');
-
-const isSimpleObject = ({constructor}) => constructor === Object;
-const {isArray} = Array;
-const isMergeableObject = (a) => isArray(a) || isSimpleObject(a);
+const merge = require('webpack-merge');
 
 const htmlConfig = require('./.webpack/html');
 const cssConfig = require('./.webpack/css');
 const jsConfig = require('./.webpack/js');
 
-module.exports = deepmerge.all([
+module.exports = merge([
     jsConfig,
     htmlConfig,
     cssConfig,
-], {isMergeableObject});
+]);