diff --git a/plugin/preload.js b/plugin/preload.js
index d219977..0158a28 100644
--- a/plugin/preload.js
+++ b/plugin/preload.js
@@ -464,6 +464,7 @@ window.getuToolsLite = () => {
     delete utoolsLite.getUserServerTemporaryToken
     delete utoolsLite.openPayment
     delete utoolsLite.fetchUserPayments
+    Object.freeze(utoolsLite)
     return utoolsLite
 }