diff --git a/packages/demo-server/vercel.json b/packages/demo-server/vercel.json
index 6ba8d8d..6a64cba 100644
--- a/packages/demo-server/vercel.json
+++ b/packages/demo-server/vercel.json
@@ -1,7 +1,7 @@
 {
   "functions": {
     "index.ts": {
-      "includeFiles": "components/**/*,../library/dist/**/*"
+      "includeFiles": ["components/**/*", "../library/dist/**/*"]
     }
   }
 }