diff --git a/swagger_parser/CHANGELOG.md b/swagger_parser/CHANGELOG.md
index 3c5a6779..dedee9c4 100644
--- a/swagger_parser/CHANGELOG.md
+++ b/swagger_parser/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.21.0
+- Add support for union types `oneOf`([#265](https://github.com/Carapacik/swagger_parser/issues/265), [#286](https://github.com/Carapacik/swagger_parser/issues/265))
+- Fixed config property inheritance
+
 ## 1.20.1
 - Fixed errors with config parsing
 
diff --git a/swagger_parser/pubspec.yaml b/swagger_parser/pubspec.yaml
index fb690451..2ef66cfd 100644
--- a/swagger_parser/pubspec.yaml
+++ b/swagger_parser/pubspec.yaml
@@ -1,6 +1,6 @@
 name: swagger_parser
 description: Package that generates REST clients and data classes from OpenApi definition file
-version: 1.20.1
+version: 1.21.0
 repository: https://github.com/Carapacik/swagger_parser/tree/main/swagger_parser
 topics:
   - swagger
diff --git a/swagger_parser_pages/lib/content/generator_content.dart b/swagger_parser_pages/lib/content/generator_content.dart
index f1cae7df..db2db485 100644
--- a/swagger_parser_pages/lib/content/generator_content.dart
+++ b/swagger_parser_pages/lib/content/generator_content.dart
@@ -90,8 +90,7 @@ class _GeneratorContentState extends State<GeneratorContent> {
                                 height: 48,
                                 child: ElevatedButton(
                                   style: ElevatedButton.styleFrom(
-                                    backgroundColor: const Color(0xFFc92b16)
-                                        .withOpacity(0.8),
+                                    backgroundColor: const Color(0xb3c92b16),
                                   ),
                                   onPressed: () async {
                                     _fileContent.clear();
diff --git a/swagger_parser_pages/lib/utils/file_utils.dart b/swagger_parser_pages/lib/utils/file_utils.dart
index 1899a25a..6f08bea1 100644
--- a/swagger_parser_pages/lib/utils/file_utils.dart
+++ b/swagger_parser_pages/lib/utils/file_utils.dart
@@ -1,3 +1,4 @@
+import 'dart:convert';
 import 'dart:js_interop';
 import 'dart:js_interop_unsafe';
 import 'dart:typed_data';
@@ -10,19 +11,17 @@ void generateArchive(List<GeneratedFile> files) {
   final encoder = ZipEncoder();
   final archive = Archive();
   for (final file in files) {
-    archive.addFile(ArchiveFile(file.name, file.content.length, file.content));
+    final contentBytes = utf8.encode(file.content);
+    archive.addFile(ArchiveFile(file.name, contentBytes.length, contentBytes));
   }
-  final outputStream = OutputStream();
+  final outputStream = OutputMemoryStream();
   final bytes = encoder.encode(
     archive,
-    level: Deflate.BEST_COMPRESSION,
+    level: DeflateLevel.bestCompression,
     output: outputStream,
   );
-  if (bytes == null || bytes is! Uint8List) {
-    throw Exception('Error with encode');
-  }
 
-  final blobWeb = web.Blob(<JSUint8Array>[bytes.toJS].toJS);
+  final blobWeb = web.Blob(<JSUint8Array>[Uint8List.fromList(bytes).toJS].toJS);
   final url = web.URL.createObjectURL(blobWeb);
   final anchor = web.document.createElement('a') as web.HTMLAnchorElement
     ..href = url
diff --git a/swagger_parser_pages/pubspec.yaml b/swagger_parser_pages/pubspec.yaml
index c7b7f29b..a77aea4a 100644
--- a/swagger_parser_pages/pubspec.yaml
+++ b/swagger_parser_pages/pubspec.yaml
@@ -3,21 +3,21 @@ description: Web interface for swagger_parser
 publish_to: none
 version: 1.0.0+1
 environment:
-  sdk: '>=3.5.0 <4.0.0'
+  sdk: '>=3.6.0 <4.0.0'
 
 dependencies:
-  archive: ^3.6.1
-  file_picker: ^8.0.7
+  archive: ^4.0.2
+  file_picker: ^8.1.7
   flutter:
     sdk: flutter
   flutter_web_plugins:
     sdk: flutter
-  swagger_parser: ^1.18.1
-  url_launcher: ^6.3.0
+  swagger_parser: ^1.21.0
+  url_launcher: ^6.3.1
   web:
 
 dev_dependencies:
-  carapacik_lints: ^1.9.1
+  carapacik_lints: ^1.10.0
 
 flutter:
   uses-material-design: true