diff --git a/ui/vite.config.ts b/ui/vite.config.ts
index 6d28e0e..07899bb 100644
--- a/ui/vite.config.ts
+++ b/ui/vite.config.ts
@@ -14,6 +14,9 @@ export default defineConfig({
       },
     },
   },
+  preview: {
+    allowedHosts: ["klapi.tietokonepaja.fi"],
+  },
   resolve: {
     alias: {
       "~": path.resolve(__dirname, "./src"),