diff --git a/webpack.config.js b/webpack.config.js
index 1b89233..984d588 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -18,7 +18,7 @@ const HtmlWebpackHarddiskPlugin = require('html-webpack-harddisk-plugin');
 const isProduction = process.env.NODE_ENV === 'production';
 
 module.exports = {
-  mode: 'development',
+  mode: isProduction ? 'production' : 'development',
   entry: './src/index.js',
   output: {
     path: path.resolve(__dirname, 'public', 'build'),