diff --git a/src/hooks/useWebSocket.ts b/src/hooks/useWebSocket.ts
index 5d52fa8..6a719c5 100644
--- a/src/hooks/useWebSocket.ts
+++ b/src/hooks/useWebSocket.ts
@@ -23,6 +23,9 @@ export interface WSMessage {
   new_expires_at?: string;
   tariff_name?: string;
   days_left?: number;
+  // Device purchase events
+  devices_added?: number;
+  new_device_limit?: number;
   // Autopay events
   required_kopeks?: number;
   required_rubles?: number;