diff --git a/CHANGELOG.md b/CHANGELOG.md
index 80869e7..f54ff93 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,15 @@
 # Changelog
 
+v4.5.0
+
+* Deprecate the use of `Uuid.NAMESPACE*` and `UuidV5.NAMESPACE`, and switch to using a proper const enum for this. (thanks @bymoye)
+  * These will be removed once sufficient time has been made for the deprecation notice to be seen. Most likely v5.0.
+  * Please use the new `Namespace` enum in `enums.dart`.
+* Re-add `Uuid.NAMESPACE*` and `UuidV5.NAMESPACE` in order to give deprecation time.
+* Add missing MAX UUID option from RFC9562
+* Add `bytes` getter to `Namespace` enum.
+* **[PARTIAL BREAKING CHANGE]** `Namespace` is now an enum, and the entries are now of the `Namespace` type. They all have a `value` function to return the internal `string`
+
 v4.4.2
 
 * Revert meta depenency version upgrade, was breaking flutter_test. (thanks @techouse)
diff --git a/lib/enums.dart b/lib/enums.dart
index d8eedda..7c24507 100644
--- a/lib/enums.dart
+++ b/lib/enums.dart
@@ -1,20 +1,23 @@
 // ignore_for_file: constant_identifier_names
 
+import 'package:uuid/uuid.dart';
 import 'package:uuid/uuid_value.dart';
 
 /// The options for UUID Validation strictness
 enum ValidationMode { nonStrict, strictRFC4122 }
 
+/// RFC4122 & RFC9562 provided namespaces for v3, v5, and v8 namespace based UUIDs
 enum Namespace {
-  // RFC4122 provided namespaces for v3 and v5 namespace based UUIDs
   DNS("6ba7b810-9dad-11d1-80b4-00c04fd430c8"),
   URL("6ba7b811-9dad-11d1-80b4-00c04fd430c8"),
   OID("6ba7b812-9dad-11d1-80b4-00c04fd430c8"),
   X500("6ba7b814-9dad-11d1-80b4-00c04fd430c8"),
-  NIL("00000000-0000-0000-0000-000000000000");
+  NIL("00000000-0000-0000-0000-000000000000"),
+  MAX("ffffffff-ffff-ffff-ffff-ffffffffffff");
 
   const Namespace(this.value);
   final String value;
 
   UuidValue get uuidValue => UuidValue.raw(value);
+  List<int> get bytes => Uuid.parse(value, validate: false);
 }
diff --git a/lib/uuid.dart b/lib/uuid.dart
index ce217fa..5daaf2e 100644
--- a/lib/uuid.dart
+++ b/lib/uuid.dart
@@ -32,6 +32,17 @@ export 'enums.dart';
 class Uuid {
   final GlobalOptions? goptions;
 
+  @Deprecated('Please use the Namespace enum in enums.dart instead.')
+  static const NAMESPACE_DNS = '6ba7b810-9dad-11d1-80b4-00c04fd430c8';
+  @Deprecated('Please use the Namespace enum in enums.dart instead.')
+  static const NAMESPACE_URL = '6ba7b811-9dad-11d1-80b4-00c04fd430c8';
+  @Deprecated('Please use the Namespace enum in enums.dart instead.')
+  static const NAMESPACE_OID = '6ba7b812-9dad-11d1-80b4-00c04fd430c8';
+  @Deprecated('Please use the Namespace enum in enums.dart instead.')
+  static const NAMESPACE_X500 = '6ba7b814-9dad-11d1-80b4-00c04fd430c8';
+  @Deprecated('Please use the Namespace enum in enums.dart instead.')
+  static const NAMESPACE_NIL = '00000000-0000-0000-0000-000000000000';
+
   /// Creates a new instance of the Uuid class.
   /// Optionally you can pass in a [GlobalOptions] object to set global options
   /// for all UUID generation.
diff --git a/lib/uuid_value.dart b/lib/uuid_value.dart
index 0569c23..0491fe5 100644
--- a/lib/uuid_value.dart
+++ b/lib/uuid_value.dart
@@ -2,6 +2,7 @@ import 'dart:typed_data';
 
 import 'package:meta/meta.dart';
 
+import 'enums.dart';
 import 'parsing.dart';
 import 'uuid.dart';
 import 'validation.dart';
@@ -10,6 +11,17 @@ import 'validation.dart';
 class UuidValue {
   final String uuid;
 
+  @Deprecated('Please use the Namespace enum in enums.dart instead.')
+  static const dns = UuidValue.raw(Uuid.NAMESPACE_DNS);
+  @Deprecated('Please use the Namespace enum in enums.dart instead.')
+  static const url = UuidValue.raw(Uuid.NAMESPACE_URL);
+  @Deprecated('Please use the Namespace enum in enums.dart instead.')
+  static const oid = UuidValue.raw(Uuid.NAMESPACE_OID);
+  @Deprecated('Please use the Namespace enum in enums.dart instead.')
+  static const x500 = UuidValue.raw(Uuid.NAMESPACE_X500);
+  @Deprecated('Please use the Namespace enum in enums.dart instead.')
+  static const nil = UuidValue.raw(Uuid.NAMESPACE_NIL);
+
   /// fromString() creates a UuidValue from a [String] with no validation.
   factory UuidValue.fromString(String uuid) {
     return UuidValue.raw(uuid.toLowerCase());
diff --git a/lib/v5.dart b/lib/v5.dart
index ce87b7c..f83ca8e 100644
--- a/lib/v5.dart
+++ b/lib/v5.dart
@@ -12,6 +12,17 @@ import 'package:crypto/crypto.dart' as crypto;
 class UuidV5 {
   final GlobalOptions? goptions;
 
+  @Deprecated('Please use the Namespace enum in enums.dart instead.')
+  static const NAMESPACE_DNS = '6ba7b810-9dad-11d1-80b4-00c04fd430c8';
+  @Deprecated('Please use the Namespace enum in enums.dart instead.')
+  static const NAMESPACE_URL = '6ba7b811-9dad-11d1-80b4-00c04fd430c8';
+  @Deprecated('Please use the Namespace enum in enums.dart instead.')
+  static const NAMESPACE_OID = '6ba7b812-9dad-11d1-80b4-00c04fd430c8';
+  @Deprecated('Please use the Namespace enum in enums.dart instead.')
+  static const NAMESPACE_X500 = '6ba7b814-9dad-11d1-80b4-00c04fd430c8';
+  @Deprecated('Please use the Namespace enum in enums.dart instead.')
+  static const NAMESPACE_NIL = '00000000-0000-0000-0000-000000000000';
+
   const UuidV5({this.goptions});
 
   /// v5() Generates a namspace & name-based version 5 UUID
diff --git a/pubspec.yaml b/pubspec.yaml
index 730838e..481c9a1 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: uuid
-version: 4.4.2
+version: 4.5.0
 description: >
   RFC4122 (v1, v4, v5, v6, v7, v8) UUID Generator and Parser for Dart
 documentation: https://daegalus.github.io/dart-uuid/index.html