diff --git a/packages/react-scripts/config/webpack.config.prod.js b/packages/react-scripts/config/webpack.config.prod.js
index f36c3d56b1e..342cc34d9c3 100644
--- a/packages/react-scripts/config/webpack.config.prod.js
+++ b/packages/react-scripts/config/webpack.config.prod.js
@@ -197,6 +197,8 @@ module.exports = {
                   loader: 'css-loader',
                   options: {
                     importLoaders: 1,
+                    minimize: true,
+                    sourceMap: true,
                   },
                 },
                 {