1 files changed, 3 insertions, 1 deletions
diff --git a/include/py/homekit/util.py b/include/py/homekit/util.py
index 7732d3b..c686f29 100644
--- a/include/py/homekit/util.py
+++ b/include/py/homekit/util.py
@@ -12,7 +12,7 @@ import re
 import os
 import ipaddress
 
-from collections import namedtuple
+from collections.abc import KeysView
 from enum import Enum
 from datetime import datetime
 from typing import Optional, List
@@ -119,6 +119,8 @@ def json_serial(obj):
         return obj.timestamp()
     if isinstance(obj, Enum):
         return obj.value
+    if isinstance(obj, KeysView):
+        return list(obj)
     raise TypeError("Type %s not serializable" % type(obj))