diff --git a/lib/compiler.js b/lib/compiler.js
index cc727d2..326384e 100644
--- a/lib/compiler.js
+++ b/lib/compiler.js
@@ -6,6 +6,7 @@
  */
 'use strict';
 var Promise = require('bluebird');
+var _ = require('lodash');
 var path = require('path');
 var NodeTemplatePlugin = require('webpack/lib/node/NodeTemplatePlugin');
 var NodeTargetPlugin = require('webpack/lib/node/NodeTargetPlugin');
@@ -37,7 +38,7 @@ module.exports.compileTemplate = function compileTemplate (template, context, ou
     publicPath: compilation.outputOptions.publicPath
   };
   // Store the result of the parent compilation before we start the child compilation
-  var assetsBeforeCompilation = Object.assign({}, compilation.assets[outputOptions.filename]);
+  var assetsBeforeCompilation = _.assign({}, compilation.assets[outputOptions.filename]);
   // Create an additional child compiler which takes the template
   // and turns it into an Node.JS html factory.
   // This allows us to use loaders during the compilation