diff --git a/index.js b/index.js
index 414e9aec..6879a300 100644
--- a/index.js
+++ b/index.js
@@ -98,7 +98,7 @@ function createLoaderRules(languages, features, workers, outputPath, publicPath)
   };
   return [
     {
-      test: /monaco-editor\/esm\/vs\/editor\/editor.(api|main).js/,
+      test: /monaco-editor[/\\]esm[/\\]vs[/\\]editor[/\\]editor.(api|main).js/,
       use: [
         {
           loader: INCLUDE_LOADER_PATH,