diff --git a/package.json b/package.json
index 7768013..3ec3477 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
   },
   "scripts": {
     "start": "tsup --watch",
-    "dev": "npm --prefix demo run dev",
+    "dev": "npm --prefix demo install && npm --prefix demo run dev",
     "build": "tsup",
     "test": "vitest run",
     "test:watch": "vitest",