diff --git a/netbox_custom_objects/api/serializers.py b/netbox_custom_objects/api/serializers.py
index 69aa67f..0df23e4 100644
--- a/netbox_custom_objects/api/serializers.py
+++ b/netbox_custom_objects/api/serializers.py
@@ -57,6 +57,7 @@ class Meta:
             "related_object_type",
             "app_label",
             "model",
+            "group_name",
         )
 
     def validate(self, attrs):