diff --git a/examples/save_historical_data.py b/examples/save_historical_data.py
index c5aebecd8..58bf4bd29 100644
--- a/examples/save_historical_data.py
+++ b/examples/save_historical_data.py
@@ -1,7 +1,7 @@
 import time
 import dateparser
 import pytz
-import json
+import ujson as json
 
 from datetime import datetime
 from binance.client import Client