diff --git a/packages/web-util/src/hooks/useNotifications.ts b/packages/web-util/src/hooks/useNotifications.ts
index 52e626b38..2f9df24f9 100644
--- a/packages/web-util/src/hooks/useNotifications.ts
+++ b/packages/web-util/src/hooks/useNotifications.ts
@@ -53,7 +53,7 @@ export function useNotifications(): Notification[] {
   useEffect(() => {
     return storage.onUpdate(NOTIFICATION_KEY, () => {
       const mem = storage.get(NOTIFICATION_KEY) ?? new Map();
-      setter(mem);
+      setter(structuredClone(mem));
     });
   });