diff --git a/lib/read-metadata.js b/lib/read-metadata.js
index cc43413..9860ca9 100644
--- a/lib/read-metadata.js
+++ b/lib/read-metadata.js
@@ -5,10 +5,10 @@ const {parse: parseDockerfile} = require('docker-file-parser')
 
 const listPackage = {
   scripts: {
-    start: 'serve ./content'
+    start: `NODE_ENV='production' serve ./content`
   },
   dependencies: {
-    serve: '3.4.1'
+    serve: '4.0.1'
   }
 }