diff --git a/tests/dbus_service_mocks/network_connection_settings.py b/tests/dbus_service_mocks/network_connection_settings.py
index 4a17cef63..c045dc8f1 100644
--- a/tests/dbus_service_mocks/network_connection_settings.py
+++ b/tests/dbus_service_mocks/network_connection_settings.py
@@ -1,9 +1,10 @@
 """Mock of Network Manager Connection Settings service."""
 
+from copy import deepcopy
 from ipaddress import IPv6Address
+
 from dbus_fast import Variant
 from dbus_fast.service import PropertyAccess, dbus_property, signal
-from copy import deepcopy
 
 from .base import DBusServiceMock, dbus_method