diff --git a/packages/dynamite/dynamite/lib/src/openapi_builder.dart b/packages/dynamite/dynamite/lib/src/openapi_builder.dart
index d41ea1f2..b559f72b 100644
--- a/packages/dynamite/dynamite/lib/src/openapi_builder.dart
+++ b/packages/dynamite/dynamite/lib/src/openapi_builder.dart
@@ -144,11 +144,9 @@ class OpenAPIBuilder implements Builder {
                     ),
                   )
                   ..body = Block.of([
-                    const Code('final data = await response.bodyBytes;'),
-                    const Code(''),
                     const Code('String body;'),
                     const Code('try {'),
-                    const Code('body = utf8.decode(data);'),
+                    const Code('body = await response.body;'),
                     const Code('} on FormatException {'),
                     const Code("body = 'binary';"),
                     const Code('}'),
@@ -541,7 +539,7 @@ class OpenAPIBuilder implements Builder {
                                       code.write('if ($parameterName != null) {');
                                     }
                                     code.write(
-                                      '_body = Uint8List.fromList(utf8.encode(${result.encode(parameterName, mimeType: mimeType)}));',
+                                      '_body = utf8.encode(${result.encode(parameterName, mimeType: mimeType)}) as Uint8List;',
                                     );
                                     if (dartParameterNullable) {
                                       code.write('}');
diff --git a/packages/dynamite/dynamite_runtime/lib/src/http_client.dart b/packages/dynamite/dynamite_runtime/lib/src/http_client.dart
index 53141502..04d49176 100644
--- a/packages/dynamite/dynamite_runtime/lib/src/http_client.dart
+++ b/packages/dynamite/dynamite_runtime/lib/src/http_client.dart
@@ -140,7 +140,7 @@ class DynamiteClient {
       request.headers.add(header.key, header.value);
     }
     if (body != null) {
-      request.add(body.toList());
+      request.add(body);
     }
     if (cookieJar != null) {
       request.cookies.addAll(await cookieJar!.loadForRequest(uri));
diff --git a/packages/neon/neon/lib/src/pages/settings.dart b/packages/neon/neon/lib/src/pages/settings.dart
index a5083802..35aa37af 100644
--- a/packages/neon/neon/lib/src/pages/settings.dart
+++ b/packages/neon/neon/lib/src/pages/settings.dart
@@ -260,7 +260,7 @@ class _SettingsPageState extends State<SettingsPage> {
                             ),
                           ),
                         );
-                        await saveFileWithPickDialog(fileName, Uint8List.fromList(utf8.encode(data)));
+                        await saveFileWithPickDialog(fileName, utf8.encode(data) as Uint8List);
                       } catch (e, s) {
                         debugPrint(e.toString());
                         debugPrint(s.toString());
diff --git a/packages/nextcloud/lib/src/api/core.openapi.dart b/packages/nextcloud/lib/src/api/core.openapi.dart
index e041d2e3..a4e7a475 100644
--- a/packages/nextcloud/lib/src/api/core.openapi.dart
+++ b/packages/nextcloud/lib/src/api/core.openapi.dart
@@ -1,6 +1,5 @@
 // ignore_for_file: camel_case_types
 // ignore_for_file: public_member_api_docs
-import 'dart:convert';
 import 'dart:typed_data';
 
 import 'package:built_collection/built_collection.dart';
@@ -34,11 +33,9 @@ class CoreApiException extends DynamiteApiException {
   );
 
   static Future<CoreApiException> fromResponse(final HttpClientResponse response) async {
-    final data = await response.bodyBytes;
-
     String body;
     try {
-      body = utf8.decode(data);
+      body = await response.body;
     } on FormatException {
       body = 'binary';
     }
diff --git a/packages/nextcloud/lib/src/api/files_sharing.openapi.dart b/packages/nextcloud/lib/src/api/files_sharing.openapi.dart
index 03029f14..c71a6ad5 100644
--- a/packages/nextcloud/lib/src/api/files_sharing.openapi.dart
+++ b/packages/nextcloud/lib/src/api/files_sharing.openapi.dart
@@ -1,6 +1,5 @@
 // ignore_for_file: camel_case_types
 // ignore_for_file: public_member_api_docs
-import 'dart:convert';
 import 'dart:typed_data';
 
 import 'package:built_collection/built_collection.dart';
@@ -34,11 +33,9 @@ class FilesSharingApiException extends DynamiteApiException {
   );
 
   static Future<FilesSharingApiException> fromResponse(final HttpClientResponse response) async {
-    final data = await response.bodyBytes;
-
     String body;
     try {
-      body = utf8.decode(data);
+      body = await response.body;
     } on FormatException {
       body = 'binary';
     }
diff --git a/packages/nextcloud/lib/src/api/news.openapi.dart b/packages/nextcloud/lib/src/api/news.openapi.dart
index 187200b5..5e990249 100644
--- a/packages/nextcloud/lib/src/api/news.openapi.dart
+++ b/packages/nextcloud/lib/src/api/news.openapi.dart
@@ -1,6 +1,5 @@
 // ignore_for_file: camel_case_types
 // ignore_for_file: public_member_api_docs
-import 'dart:convert';
 import 'dart:typed_data';
 
 import 'package:built_collection/built_collection.dart';
@@ -34,11 +33,9 @@ class NewsApiException extends DynamiteApiException {
   );
 
   static Future<NewsApiException> fromResponse(final HttpClientResponse response) async {
-    final data = await response.bodyBytes;
-
     String body;
     try {
-      body = utf8.decode(data);
+      body = await response.body;
     } on FormatException {
       body = 'binary';
     }
diff --git a/packages/nextcloud/lib/src/api/notes.openapi.dart b/packages/nextcloud/lib/src/api/notes.openapi.dart
index 35f81995..c9af34eb 100644
--- a/packages/nextcloud/lib/src/api/notes.openapi.dart
+++ b/packages/nextcloud/lib/src/api/notes.openapi.dart
@@ -34,11 +34,9 @@ class NotesApiException extends DynamiteApiException {
   );
 
   static Future<NotesApiException> fromResponse(final HttpClientResponse response) async {
-    final data = await response.bodyBytes;
-
     String body;
     try {
-      body = utf8.decode(data);
+      body = await response.body;
     } on FormatException {
       body = 'binary';
     }
@@ -336,9 +334,8 @@ class NotesClient extends DynamiteClient {
     }
     // coverage:ignore-end
     headers['Content-Type'] = 'application/json';
-    body = Uint8List.fromList(
-      utf8.encode(json.encode(_jsonSerializers.serialize(settings, specifiedType: const FullType(NotesSettings)))),
-    );
+    body = utf8.encode(json.encode(_jsonSerializers.serialize(settings, specifiedType: const FullType(NotesSettings))))
+        as Uint8List;
     final response = await doRequest(
       'put',
       Uri(path: path, queryParameters: queryParameters.isNotEmpty ? queryParameters : null).toString(),
diff --git a/packages/nextcloud/lib/src/api/notifications.openapi.dart b/packages/nextcloud/lib/src/api/notifications.openapi.dart
index 371ab584..be8cbc3c 100644
--- a/packages/nextcloud/lib/src/api/notifications.openapi.dart
+++ b/packages/nextcloud/lib/src/api/notifications.openapi.dart
@@ -1,6 +1,5 @@
 // ignore_for_file: camel_case_types
 // ignore_for_file: public_member_api_docs
-import 'dart:convert';
 import 'dart:typed_data';
 
 import 'package:built_collection/built_collection.dart';
@@ -34,11 +33,9 @@ class NotificationsApiException extends DynamiteApiException {
   );
 
   static Future<NotificationsApiException> fromResponse(final HttpClientResponse response) async {
-    final data = await response.bodyBytes;
-
     String body;
     try {
-      body = utf8.decode(data);
+      body = await response.body;
     } on FormatException {
       body = 'binary';
     }
diff --git a/packages/nextcloud/lib/src/api/provisioning_api.openapi.dart b/packages/nextcloud/lib/src/api/provisioning_api.openapi.dart
index cf0e79d1..0778324e 100644
--- a/packages/nextcloud/lib/src/api/provisioning_api.openapi.dart
+++ b/packages/nextcloud/lib/src/api/provisioning_api.openapi.dart
@@ -1,6 +1,5 @@
 // ignore_for_file: camel_case_types
 // ignore_for_file: public_member_api_docs
-import 'dart:convert';
 import 'dart:typed_data';
 
 import 'package:built_collection/built_collection.dart';
@@ -34,11 +33,9 @@ class ProvisioningApiApiException extends DynamiteApiException {
   );
 
   static Future<ProvisioningApiApiException> fromResponse(final HttpClientResponse response) async {
-    final data = await response.bodyBytes;
-
     String body;
     try {
-      body = utf8.decode(data);
+      body = await response.body;
     } on FormatException {
       body = 'binary';
     }
diff --git a/packages/nextcloud/lib/src/api/settings.openapi.dart b/packages/nextcloud/lib/src/api/settings.openapi.dart
index 05315923..51e46cce 100644
--- a/packages/nextcloud/lib/src/api/settings.openapi.dart
+++ b/packages/nextcloud/lib/src/api/settings.openapi.dart
@@ -1,6 +1,5 @@
 // ignore_for_file: camel_case_types
 // ignore_for_file: public_member_api_docs
-import 'dart:convert';
 import 'dart:typed_data';
 
 import 'package:built_value/built_value.dart';
@@ -32,11 +31,9 @@ class SettingsApiException extends DynamiteApiException {
   );
 
   static Future<SettingsApiException> fromResponse(final HttpClientResponse response) async {
-    final data = await response.bodyBytes;
-
     String body;
     try {
-      body = utf8.decode(data);
+      body = await response.body;
     } on FormatException {
       body = 'binary';
     }
diff --git a/packages/nextcloud/lib/src/api/theming.openapi.dart b/packages/nextcloud/lib/src/api/theming.openapi.dart
index aadcdfe8..b4ded87e 100644
--- a/packages/nextcloud/lib/src/api/theming.openapi.dart
+++ b/packages/nextcloud/lib/src/api/theming.openapi.dart
@@ -1,6 +1,5 @@
 // ignore_for_file: camel_case_types
 // ignore_for_file: public_member_api_docs
-import 'dart:convert';
 import 'dart:typed_data';
 
 import 'package:built_collection/built_collection.dart';
@@ -34,11 +33,9 @@ class ThemingApiException extends DynamiteApiException {
   );
 
   static Future<ThemingApiException> fromResponse(final HttpClientResponse response) async {
-    final data = await response.bodyBytes;
-
     String body;
     try {
-      body = utf8.decode(data);
+      body = await response.body;
     } on FormatException {
       body = 'binary';
     }
diff --git a/packages/nextcloud/lib/src/api/uppush.openapi.dart b/packages/nextcloud/lib/src/api/uppush.openapi.dart
index 94e15074..e52587e7 100644
--- a/packages/nextcloud/lib/src/api/uppush.openapi.dart
+++ b/packages/nextcloud/lib/src/api/uppush.openapi.dart
@@ -1,6 +1,5 @@
 // ignore_for_file: camel_case_types
 // ignore_for_file: public_member_api_docs
-import 'dart:convert';
 import 'dart:typed_data';
 
 import 'package:built_collection/built_collection.dart';
@@ -33,11 +32,9 @@ class UppushApiException extends DynamiteApiException {
   );
 
   static Future<UppushApiException> fromResponse(final HttpClientResponse response) async {
-    final data = await response.bodyBytes;
-
     String body;
     try {
-      body = utf8.decode(data);
+      body = await response.body;
     } on FormatException {
       body = 'binary';
     }
diff --git a/packages/nextcloud/lib/src/api/user_status.openapi.dart b/packages/nextcloud/lib/src/api/user_status.openapi.dart
index d408feab..b52a6b83 100644
--- a/packages/nextcloud/lib/src/api/user_status.openapi.dart
+++ b/packages/nextcloud/lib/src/api/user_status.openapi.dart
@@ -1,6 +1,5 @@
 // ignore_for_file: camel_case_types
 // ignore_for_file: public_member_api_docs
-import 'dart:convert';
 import 'dart:typed_data';
 
 import 'package:built_collection/built_collection.dart';
@@ -34,11 +33,9 @@ class UserStatusApiException extends DynamiteApiException {
   );
 
   static Future<UserStatusApiException> fromResponse(final HttpClientResponse response) async {
-    final data = await response.bodyBytes;
-
     String body;
     try {
-      body = utf8.decode(data);
+      body = await response.body;
     } on FormatException {
       body = 'binary';
     }
diff --git a/packages/nextcloud/lib/src/client.dart b/packages/nextcloud/lib/src/client.dart
index 278c47be..f3fb95be 100644
--- a/packages/nextcloud/lib/src/client.dart
+++ b/packages/nextcloud/lib/src/client.dart
@@ -27,10 +27,7 @@ class NextcloudClient extends DynamiteClient {
     final String? userAgentOverride,
     super.cookieJar,
   }) : super(
-          baseHeaders: (<String, String?>{
-            'Accept-Language': language,
-          }..removeWhere((final _, final value) => value == null))
-              .cast<String, String>(),
+          baseHeaders: language != null ? {'Accept-Language': language} : null,
           userAgent: userAgentOverride ?? appType.userAgent,
           authentications: [
             if (appPassword != null) ...[
diff --git a/packages/nextcloud/lib/src/webdav/client.dart b/packages/nextcloud/lib/src/webdav/client.dart
index 88a10b53..87fc020e 100644
--- a/packages/nextcloud/lib/src/webdav/client.dart
+++ b/packages/nextcloud/lib/src/webdav/client.dart
@@ -22,9 +22,12 @@ class WebDavClient {
   Future<HttpClientResponse> _send(
     final String method,
     final String url, {
-    final Stream<Uint8List>? data,
+    final Stream<Uint8List>? dataStream,
+    final Uint8List? data,
     final Map<String, String>? headers,
   }) async {
+    assert(dataStream == null || data == null, 'Only one of dataStream or data can be specified.');
+
     final request = await HttpClient().openUrl(
       method,
       Uri.parse(url),
@@ -33,14 +36,17 @@ class WebDavClient {
     for (final header in {
       HttpHeaders.contentTypeHeader: 'application/xml',
       ...?rootClient.baseHeaders,
-      if (headers != null) ...headers,
-      if (rootClient.authentications.isNotEmpty) ...rootClient.authentications.first.headers,
+      ...?headers,
+      ...?rootClient.authentications.firstOrNull?.headers,
     }.entries) {
       request.headers.add(header.key, header.value);
     }
 
     if (data != null) {
-      await request.addStream(data);
+      request.add(data);
+    }
+    if (dataStream != null) {
+      await request.addStream(dataStream);
     }
 
     final response = await request.close();
@@ -49,7 +55,7 @@ class WebDavClient {
       throw DynamiteApiException(
         response.statusCode,
         response.responseHeaders,
-        utf8.decode(await response.bodyBytes),
+        await response.body,
       );
     }
 
@@ -78,24 +84,16 @@ class WebDavClient {
   Future<WebDavMultistatus> _parseResponse(final HttpClientResponse response) async =>
       WebDavMultistatus.fromXmlElement(xml.XmlDocument.parse(await response.body).rootElement);
 
-  Map<String, String>? _getUploadHeaders({
+  Map<String, String> _getUploadHeaders({
     required final DateTime? lastModified,
     required final DateTime? created,
     required final int? contentLength,
-  }) {
-    final headers = <String, String>{
-      if (lastModified != null) ...{
-        'X-OC-Mtime': (lastModified.millisecondsSinceEpoch ~/ 1000).toString(),
-      },
-      if (created != null) ...{
-        'X-OC-CTime': (created.millisecondsSinceEpoch ~/ 1000).toString(),
-      },
-      if (contentLength != null) ...{
-        'Content-Length': contentLength.toString(),
-      },
-    };
-    return headers.isNotEmpty ? headers : null;
-  }
+  }) =>
+      {
+        if (lastModified != null) 'X-OC-Mtime': (lastModified.millisecondsSinceEpoch ~/ 1000).toString(),
+        if (created != null) 'X-OC-CTime': (created.millisecondsSinceEpoch ~/ 1000).toString(),
+        if (contentLength != null) HttpHeaders.contentLengthHeader: contentLength.toString(),
+      };
 
   /// Gets the WebDAV capabilities of the server.
   Future<WebDavOptions> options() async {
@@ -103,8 +101,8 @@ class WebDavClient {
       'OPTIONS',
       _constructPath(),
     );
-    final davCapabilities = response.headers['dav']?.cast<String>().first ?? '';
-    final davSearchCapabilities = response.headers['dasl']?.cast<String>().first ?? '';
+    final davCapabilities = response.headers['dav']?.first ?? '';
+    final davSearchCapabilities = response.headers['dasl']?.first ?? '';
     return WebDavOptions(
       davCapabilities.split(',').map((final e) => e.trim()).where((final e) => e.isNotEmpty).toSet(),
       davSearchCapabilities.split(',').map((final e) => e.trim()).where((final e) => e.isNotEmpty).toSet(),
@@ -138,12 +136,15 @@ class WebDavClient {
     final DateTime? lastModified,
     final DateTime? created,
   }) =>
-      putStream(
-        Stream.value(localData),
-        path,
-        lastModified: lastModified,
-        created: created,
-        contentLength: localData.lengthInBytes,
+      _send(
+        'PUT',
+        _constructPath(path),
+        data: localData,
+        headers: _getUploadHeaders(
+          lastModified: lastModified,
+          created: created,
+          contentLength: null,
+        ),
       );
 
   /// Puts a new file at [path] with [localData] as content.
@@ -162,7 +163,7 @@ class WebDavClient {
       _send(
         'PUT',
         _constructPath(path),
-        data: localData,
+        dataStream: localData,
         headers: _getUploadHeaders(
           lastModified: lastModified,
           created: created,
@@ -188,7 +189,7 @@ class WebDavClient {
       file.openRead().map((final chunk) {
         uploaded += chunk.length;
         onProgress?.call(uploaded / fileStat.size);
-        return Uint8List.fromList(chunk);
+        return chunk as Uint8List;
       }),
       path,
       lastModified: lastModified,
@@ -246,20 +247,10 @@ class WebDavClient {
         await _send(
           'PROPFIND',
           _constructPath(path),
-          data: Stream.value(
-            Uint8List.fromList(
-              utf8.encode(
-                WebDavPropfind(prop: prop ?? WebDavPropWithoutValues())
-                    .toXmlElement(namespaces: namespaces)
-                    .toXmlString(),
-              ),
-            ),
-          ),
-          headers: {
-            if (depth != null) ...{
-              'Depth': depth.value,
-            },
-          },
+          data: utf8.encode(
+            WebDavPropfind(prop: prop ?? WebDavPropWithoutValues()).toXmlElement(namespaces: namespaces).toXmlString(),
+          ) as Uint8List,
+          headers: depth != null ? {'Depth': depth.value} : null,
         ),
       );
 
@@ -276,16 +267,12 @@ class WebDavClient {
         await _send(
           'REPORT',
           _constructPath(path),
-          data: Stream.value(
-            Uint8List.fromList(
-              utf8.encode(
-                WebDavOcFilterFiles(
-                  filterRules: filterRules,
-                  prop: prop ?? WebDavPropWithoutValues(), // coverage:ignore-line
-                ).toXmlElement(namespaces: namespaces).toXmlString(),
-              ),
-            ),
-          ),
+          data: utf8.encode(
+            WebDavOcFilterFiles(
+              filterRules: filterRules,
+              prop: prop ?? WebDavPropWithoutValues(), // coverage:ignore-line
+            ).toXmlElement(namespaces: namespaces).toXmlString(),
+          ) as Uint8List,
         ),
       );
 
@@ -303,16 +290,12 @@ class WebDavClient {
     final response = await _send(
       'PROPPATCH',
       _constructPath(path),
-      data: Stream.value(
-        Uint8List.fromList(
-          utf8.encode(
-            WebDavPropertyupdate(
-              set: set != null ? WebDavSet(prop: set) : null,
-              remove: remove != null ? WebDavRemove(prop: remove) : null,
-            ).toXmlElement(namespaces: namespaces).toXmlString(),
-          ),
-        ),
-      ),
+      data: utf8.encode(
+        WebDavPropertyupdate(
+          set: set != null ? WebDavSet(prop: set) : null,
+          remove: remove != null ? WebDavRemove(prop: remove) : null,
+        ).toXmlElement(namespaces: namespaces).toXmlString(),
+      ) as Uint8List,
     );
     final data = await _parseResponse(response);
     for (final a in data.responses) {
diff --git a/packages/nextcloud/test/webdav_test.dart b/packages/nextcloud/test/webdav_test.dart
index bf6ac30b..b9080ccb 100644
--- a/packages/nextcloud/test/webdav_test.dart
+++ b/packages/nextcloud/test/webdav_test.dart
@@ -137,7 +137,7 @@ void main() {
     });
 
     test('Get directory props', () async {
-      final data = Uint8List.fromList(utf8.encode('test'));
+      final data = utf8.encode('test') as Uint8List;
       await client.webdav.mkcol('test');
       await client.webdav.put(data, 'test/test.txt');
 
@@ -169,7 +169,7 @@ void main() {
     });
 
     test('Filter files', () async {
-      final response = await client.webdav.put(Uint8List.fromList(utf8.encode('test')), 'test.txt');
+      final response = await client.webdav.put(utf8.encode('test') as Uint8List, 'test.txt');
       final id = response.headers['oc-fileid']!.first;
       await client.webdav.proppatch(
         'test.txt',
@@ -202,7 +202,7 @@ void main() {
       final uploadTime = DateTime.now();
 
       await client.webdav.put(
-        Uint8List.fromList(utf8.encode('test')),
+        utf8.encode('test') as Uint8List,
         'test.txt',
         lastModified: lastModifiedDate,
         created: createdDate,
@@ -237,7 +237,7 @@ void main() {
     });
 
     test('Remove properties', () async {
-      await client.webdav.put(Uint8List.fromList(utf8.encode('test')), 'test.txt');
+      await client.webdav.put(utf8.encode('test') as Uint8List, 'test.txt');
 
       var updated = await client.webdav.proppatch(
         'test.txt',
@@ -323,7 +323,7 @@ void main() {
           ('put_get_utf8_segment', 'res-%e2%82%ac'),
         ]) {
           test(name, () async {
-            final content = Uint8List.fromList(utf8.encode('This is a test file'));
+            final content = utf8.encode('This is a test file') as Uint8List;
 
             final response = await client.webdav.put(content, path);
             expect(response.statusCode, 201);