diff --git a/ui/vite.config.ts b/ui/vite.config.ts
index bf699a8..b6def13 100644
--- a/ui/vite.config.ts
+++ b/ui/vite.config.ts
@@ -3,5 +3,11 @@ import tailwindcss from '@tailwindcss/vite';
 import { defineConfig } from 'vite';
 
 export default defineConfig({
-	plugins: [tailwindcss(), sveltekit()]
+	plugins: [tailwindcss(), sveltekit()],
+	ssr: {
+		// Force these packages to be bundled into the server output rather than
+		// treated as external requires. The production Docker image has no
+		// node_modules, so anything used in server-side code must be inlined.
+		noExternal: ['marked']
+	}
 });