diff --git a/webpack.config.js b/webpack.config.js
index 67c64c6e61..59f9d36289 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -21,6 +21,8 @@ module.exports = {
         ]
     },
 
+    devtool: "source-map",
+
     externals: {
         // stuff not in node_modules can be resolved here.
     }