diff --git a/testing/logging/test_reporting.py b/testing/logging/test_reporting.py
index 0bd12f0a3..1f961d94a 100644
--- a/testing/logging/test_reporting.py
+++ b/testing/logging/test_reporting.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 import re
 import os
+from io import open
 
 import six