diff --git a/wideq/core.py b/wideq/core.py
index f9fc023..aff9ba5 100644
--- a/wideq/core.py
+++ b/wideq/core.py
@@ -9,7 +9,6 @@ import hmac
 import datetime
 import requests
 import logging
-import json
 from typing import Any, Dict, List, Tuple
 from requests.adapters import HTTPAdapter
 from requests.packages.urllib3.util.retry import Retry