diff --git a/lib/webpack/client.config.js b/lib/webpack/client.config.js
index f4054c05e0..f5f7857383 100644
--- a/lib/webpack/client.config.js
+++ b/lib/webpack/client.config.js
@@ -64,7 +64,7 @@ export default function () {
           // If it's inside node_modules
           /node_modules/.test(module.context) &&
           // Do not externalize if the request is a CSS file
-          !/\.css$/.test(module.request)
+          !/\.(css|less|scss|sass|styl|stylus)$/.test(module.request)
         )
       }
     }),