diff --git a/gulp/webpack.production.config.js b/gulp/webpack.production.config.js
index 7308ef00..f56ae609 100644
--- a/gulp/webpack.production.config.js
+++ b/gulp/webpack.production.config.js
@@ -211,6 +211,9 @@ module.exports = ({
                     test: /\.js$/,
                     use: [
                         // "thread-loader",
+                        {
+                            loader: path.resolve(__dirname, "mod.js"),
+                        },
                         {
                             loader: "babel-loader?cacheDirectory",
                             options: {