diff --git a/isc_dhcp_leases/iscdhcpleases.py b/isc_dhcp_leases/iscdhcpleases.py
index e16677e..8578060 100644
--- a/isc_dhcp_leases/iscdhcpleases.py
+++ b/isc_dhcp_leases/iscdhcpleases.py
@@ -5,8 +5,6 @@ import re
 import struct
 import gzip
 
-from six import iteritems
-
 
 try:
     utc = datetime.timezone.utc