diff --git a/dynamic_preferences/dynamic_preferences_registry.py b/dynamic_preferences/dynamic_preferences_registry.py
index f39ab06..edc1dad 100644
--- a/dynamic_preferences/dynamic_preferences_registry.py
+++ b/dynamic_preferences/dynamic_preferences_registry.py
@@ -157,9 +157,10 @@ card_fields = {
     "format": "table",
     "title": "",
     "required_by_default": 1,
-    "required": ['card_number', "whatsapp_number"],
+    "required": ['card_number', 'card_name',"whatsapp_number"],
     "properties": {
         "card_number": {"type": "string", "title": "Card Number"},        
+        "card_name": {"type": "string", "title": "Card Name"},        
         "whatsapp_number": {"type": "string", "title": "Whatsapp Number"},
     }
 }
diff --git a/dynamic_preferences/serializers.py b/dynamic_preferences/serializers.py
index 83912a5..bf57339 100644
--- a/dynamic_preferences/serializers.py
+++ b/dynamic_preferences/serializers.py
@@ -14,8 +14,10 @@ from django.utils.dateparse import (
 )
 from django.utils.duration import duration_string
 from django.utils.encoding import force_str
+from datetime import timezone
+
 from django.utils.timezone import (
-    utc,
+    # utc,
     is_aware,
     make_aware,
     make_naive,
@@ -39,6 +41,7 @@ class SupportSerializer(serializers.Serializer):
 
 class CardSerializer(serializers.Serializer):
     card_number = serializers.CharField()
+    card_name = serializers.CharField()
     whatsapp_number = serializers.CharField()
     
     
@@ -428,7 +431,7 @@ class DateTimeSerializer(BaseSerializer):
         if (field_timezone is not None) and not is_aware(value):
             return make_aware(value, field_timezone)
         elif (field_timezone is None) and is_aware(value):
-            return make_naive(value, utc)
+            return make_naive(value, timezone.utc)
         return value
 
     @classmethod