diff --git a/netbox_dns_bridge/catalog_zone_manager.py b/netbox_dns_bridge/catalog_zone_manager.py
index d5d43cf..054b4e5 100644
--- a/netbox_dns_bridge/catalog_zone_manager.py
+++ b/netbox_dns_bridge/catalog_zone_manager.py
@@ -15,11 +15,12 @@ LOGGER = get_logger(__name__)
 def increment_soa_serial() -> int:
     with transaction.atomic():
         try:
-            soa_serial_obj, _ = (
-                IntegerKeyValueSetting.objects.select_for_update().get_or_create(
-                    key="catalog-zone-soa-serial",
-                    defaults={"value": 1},
-                )
+            (
+                soa_serial_obj,
+                _,
+            ) = IntegerKeyValueSetting.objects.select_for_update().get_or_create(
+                key="catalog-zone-soa-serial",
+                defaults={"value": 1},
             )
 
             new_soa_serial = soa_serial_obj.value + 1
diff --git a/netbox_dns_bridge/utils.py b/netbox_dns_bridge/utils.py
index 846c5f7..753d130 100644
--- a/netbox_dns_bridge/utils.py
+++ b/netbox_dns_bridge/utils.py
@@ -42,8 +42,7 @@ def build_dns_zone(nb_zone: netbox_dns.models.Zone) -> dns.zone.Zone:
                 # an unquoted value to be larger then 255 characters,
                 # it misunderstood everything behind a ; as a comment.
                 chunks = [
-                    '"{}"'.format(value[i : i + 255])
-                    for i in range(0, len(value), 255)
+                    '"{}"'.format(value[i : i + 255]) for i in range(0, len(value), 255)
                 ]
                 value = " ".join(chunks)
             else: