diff --git a/syng/gui.py b/syng/gui.py
index 96064ef..1c71bad 100644
--- a/syng/gui.py
+++ b/syng/gui.py
@@ -11,7 +11,7 @@ from datetime import datetime
 import os
 from functools import partial
 import random
-from typing import TYPE_CHECKING, Any, Optional
+from typing import TYPE_CHECKING, Any, Optional, cast
 import secrets
 import string
 import signal