diff --git a/stix2/utils.py b/stix2/utils.py
index 3f0e0aa..a2493e2 100644
--- a/stix2/utils.py
+++ b/stix2/utils.py
@@ -1,7 +1,8 @@
 """Utility functions and classes for the stix2 library."""
 
-import json
 import datetime as dt
+import json
+
 from dateutil import parser
 import pytz