diff --git a/chatdesk-ui/app/pages/_document.tsx b/chatdesk-ui/app/pages/_document.tsx
index ca98ebb..9b227ce 100644
--- a/chatdesk-ui/app/pages/_document.tsx
+++ b/chatdesk-ui/app/pages/_document.tsx
@@ -11,7 +11,7 @@ export default function Document() {
   return (
     <Html lang="en">
       <Head>
-        <script src="/env.js" async />
+        <script src="/env.js" defer />
       </Head>
       <body>
         <Main />
