diff --git a/src/html/layout.tsx b/src/html/layout.tsx
index 2778bed..9ef2abd 100644
--- a/src/html/layout.tsx
+++ b/src/html/layout.tsx
@@ -1,4 +1,5 @@
 import type { FC } from "hono/jsx"
+import { GIT_SHA } from "../config"
 
 export const Layout: FC = async ({ children, title }) => (
   <html lang="en">
@@ -12,7 +13,7 @@ export const Layout: FC = async ({ children, title }) => (
       <link href="/css/game.css" rel="stylesheet" />
 
       <script type="importmap" dangerouslySetInnerHTML={{ __html: `{ "imports": { "@/": "/" } }` }} />
-      <script src={process.env.NODE_ENV === "production" ? "/bundle.js" : "/js/main.js"} type="module" async></script>
+      <script src={process.env.NODE_ENV === "production" ? `/bundle.js?${GIT_SHA}` : "/js/main.js"} type="module" async></script>
     </head>
     <body data-mode="tall">
       <main>
