diff --git a/can-fly-react/public/index.html b/can-fly-react/public/index.html
index bd0e1f9..066f61f 100644
--- a/can-fly-react/public/index.html
+++ b/can-fly-react/public/index.html
@@ -1,6 +1,7 @@
 <!DOCTYPE html>
 <html lang="en">
   <head>
+    <meta http-equiv="Content-Security-Policy" content="upgrade-insecure-requests">
     <meta charset="utf-8" />
     <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
     <meta name="viewport" content="width=device-width, initial-scale=1" />
@@ -45,5 +46,6 @@
       To begin the development, run `npm start` or `yarn start`.
       To create a production bundle, use `npm run build` or `yarn build`.
     -->
+      <script src="https://t1.daumcdn.net/mapjsapi/bundle/postcode/prod/postcode.v2.js"></script>
   </body>
 </html>
