diff --git a/demo/vite.config.ts b/demo/vite.config.ts
index 1252ee189b..305ca5c3c7 100644
--- a/demo/vite.config.ts
+++ b/demo/vite.config.ts
@@ -56,4 +56,16 @@ export default defineConfig({
 	define: {
 		'import.meta.env.AGNOSUI_VERSION': version,
 	},
+	optimizeDeps: {
+		include: [
+			'@amadeus-it-group/tansu',
+			'highlight.js/lib/core',
+			'highlight.js/lib/languages/typescript',
+			'highlight.js/lib/languages/css',
+			'highlight.js/lib/languages/scss',
+			'highlight.js/lib/languages/xml',
+			'highlight.js/lib/languages/bash',
+			'@floating-ui/dom',
+		],
+	},
 });