diff --git a/webpack.config.js b/webpack.config.js
index 4a27d1c..f4296ca 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -29,7 +29,7 @@ module.exports = {
   },
   externals: {
     "single-spa": "single-spa",
-    "zone.js": "https://unpkg.com/zone.js@0.9.1/dist/zone.js"
+    "zone.js": "zone.js"
   },
   plugins: []
 };