diff --git a/tsstats/client.py b/tsstats/client.py
index 32661d9..2309b03 100644
--- a/tsstats/client.py
+++ b/tsstats/client.py
@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 import datetime
 import logging
-from collections import MutableMapping
+from collections.abc import MutableMapping
 
 logger = logging.getLogger('tsstats')