diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4441d48..8426524 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## 0.0.4
+
+- Make serializer const
+- Add asOptional getter on ValueValidator
+- Add optional getter on Map<String,ValueValidator>
+
 ## 0.0.3
 
 - Add generic Serializer model
diff --git a/lib/src/serialization/serializer.dart b/lib/src/serialization/serializer.dart
index c82c2b6..d654650 100644
--- a/lib/src/serialization/serializer.dart
+++ b/lib/src/serialization/serializer.dart
@@ -4,7 +4,7 @@ import "package:dart_iconica_utilities/src/value_validator/value_validator.dart"
 ///
 class Serializer<T> {
   ///
-  Serializer({
+  const Serializer({
     required this.fromMap,
     required this.toMap,
     this.validators = const {},
@@ -15,7 +15,7 @@ class Serializer<T> {
   ///
   factory Serializer.readOnly({
     required Map<String, dynamic> Function(T object) toMap,
-    required Map<String, ValueValidator> validators,
+    required SerializedObjectValidator validators,
     List<String> fieldPaths = const [],
     Map<String, dynamic>? data,
   }) =>
@@ -30,7 +30,7 @@ class Serializer<T> {
   ///
   factory Serializer.writeOnly({
     required T Function(Map<String, dynamic> map) fromMap,
-    required Map<String, ValueValidator> validators,
+    required SerializedObjectValidator validators,
     List<String> fieldPaths = const [],
     Map<String, dynamic>? data,
   }) =>
@@ -43,7 +43,7 @@ class Serializer<T> {
       );
 
   ///
-  final Map<String, ValueValidator> validators;
+  final SerializedObjectValidator validators;
 
   ///
   final T Function(Map<String, dynamic> map) fromMap;
diff --git a/lib/src/value_validator/extension.dart b/lib/src/value_validator/extension.dart
index 268c30b..7b8733a 100644
--- a/lib/src/value_validator/extension.dart
+++ b/lib/src/value_validator/extension.dart
@@ -2,7 +2,7 @@ import "package:dart_iconica_utilities/src/value_validator/exception.dart";
 import "package:dart_iconica_utilities/src/value_validator/models.dart";
 
 ///
-extension MapValidator on Map<String, ValueValidator> {
+extension MapValidator on SerializedObjectValidator {
   ///
   void validate(Map<String, dynamic> toValidate) {
     try {
@@ -31,7 +31,7 @@ extension MapValidator on Map<String, ValueValidator> {
 }
 
 ///
-extension ValidatorJsonRepresentation on Map<String, ValueValidator> {
+extension ValidatorJsonRepresentation on SerializedObjectValidator {
   ///
   Map<String, dynamic> asJson() => map(
         (key, value) => MapEntry(
diff --git a/lib/src/value_validator/models.dart b/lib/src/value_validator/models.dart
index 1a9f983..c530559 100644
--- a/lib/src/value_validator/models.dart
+++ b/lib/src/value_validator/models.dart
@@ -14,7 +14,7 @@ class ValueValidator {
   ValueValidator.map({
     this.optional = false,
     CustomValidator? validator,
-    Map<String, ValueValidator> validators = const {},
+    SerializedObjectValidator validators = const {},
   }) {
     jsonRepresentation = validators.asJson();
     this.validator = (value) {
@@ -215,8 +215,25 @@ class ValueValidator {
 
     return validator(value);
   }
+
+  ///
+  ValueValidator get asOptional => ValueValidator(
+        optional: true,
+        validator: validator,
+        jsonRepresentation: jsonRepresentation,
+      );
 }
 
 ///
 // ignore: avoid_annotating_with_dynamic
 typedef CustomValidator = dynamic Function(dynamic value);
+
+///
+typedef SerializedObjectValidator = Map<String, ValueValidator>;
+
+///
+extension OptionalObjectValidator on SerializedObjectValidator {
+  ///
+  SerializedObjectValidator get optional =>
+      map((key, value) => MapEntry(key, value.asOptional));
+}
diff --git a/pubspec.yaml b/pubspec.yaml
index 8970d57..14bb397 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: dart_iconica_utilities
 description: Useful utilities for dart projects
-version: 0.0.3
+version: 0.0.4
 
 homepage: https://iconica.app