diff --git a/lib/src/client.dart b/lib/src/client.dart
index c79a3a50..cea838e5 100644
--- a/lib/src/client.dart
+++ b/lib/src/client.dart
@@ -37,7 +37,6 @@ import 'package:matrix/src/models/timeline_chunk.dart';
 import 'package:matrix/src/utils/cached_stream_controller.dart';
 import 'package:matrix/src/utils/client_init_exception.dart';
 import 'package:matrix/src/utils/multilock.dart';
-import 'package:matrix/src/utils/multipart_request_progress.dart';
 import 'package:matrix/src/utils/run_benchmarked.dart';
 import 'package:matrix/src/utils/run_in_root.dart';
 import 'package:matrix/src/utils/sync_update_item_count.dart';
@@ -1524,10 +1523,6 @@ class Client extends MatrixApi {
     Uint8List file, {
     String? filename,
     String? contentType,
-
-    /// Callback which gets triggered on progress containing the amount of
-    /// uploaded bytes.
-    void Function(int)? onProgress,
   }) async {
     final mediaConfig = await getConfig();
     final maxMediaSize = mediaConfig.mUploadSize;
@@ -1536,31 +1531,8 @@ class Client extends MatrixApi {
     }
 
     contentType ??= lookupMimeType(filename ?? '', headerBytes: file);
-
-    final requestUri = Uri(
-      path: '_matrix/media/v3/upload',
-      queryParameters: {
-        if (filename != null) 'filename': filename,
-      },
-    );
-    final request = MultipartRequest(
-      'POST',
-      baseUri!.resolveUri(requestUri),
-      onProgress: onProgress,
-    );
-    request.headers['authorization'] = 'Bearer ${bearerToken!}';
-    if (contentType != null) request.headers['content-type'] = contentType;
-    request.files.add(
-      http.MultipartFile.fromBytes('file', file, filename: filename),
-    );
-    final response = await httpClient.send(request);
-    final responseBody = await response.stream.toBytes();
-    if (response.statusCode != 200) unexpectedResponse(response, responseBody);
-    final responseString = utf8.decode(responseBody);
-    final json = jsonDecode(responseString);
-    final mxc = ((json['content_uri'] as String).startsWith('mxc://')
-        ? Uri.parse(json['content_uri'] as String)
-        : throw Exception('Uri not an mxc URI'));
+    final mxc = await super
+        .uploadContent(file, filename: filename, contentType: contentType);
 
     final database = this.database;
     if (file.length <= database.maxFileSize) {
@@ -1634,10 +1606,7 @@ class Client extends MatrixApi {
 
   /// Uploads a new user avatar for this user. Leave file null to remove the
   /// current avatar.
-  Future<void> setAvatar(
-    MatrixFile? file, {
-    void Function(int)? onUploadProgress,
-  }) async {
+  Future<void> setAvatar(MatrixFile? file) async {
     if (file == null) {
       // We send an empty String to remove the avatar. Sending Null **should**
       // work but it doesn't with Synapse. See:
@@ -1648,7 +1617,6 @@ class Client extends MatrixApi {
       file.bytes,
       filename: file.name,
       contentType: file.mimeType,
-      onProgress: onUploadProgress,
     );
     await setAvatarUrl(userID!, uploadResp);
     return;
diff --git a/lib/src/room.dart b/lib/src/room.dart
index 0238db48..0c61e8f0 100644
--- a/lib/src/room.dart
+++ b/lib/src/room.dart
@@ -960,14 +960,12 @@ class Room {
           uploadFile.bytes,
           filename: uploadFile.name,
           contentType: uploadFile.mimeType,
-          onProgress: onUploadProgress,
         );
         thumbnailUploadResp = uploadThumbnail != null
             ? await client.uploadContent(
                 uploadThumbnail.bytes,
                 filename: uploadThumbnail.name,
                 contentType: uploadThumbnail.mimeType,
-                onProgress: onThumbnailUploadProgress,
               )
             : null;
       } on MatrixException catch (_) {
@@ -2120,7 +2118,6 @@ class Room {
         : await client.uploadContent(
             file.bytes,
             filename: file.name,
-            onProgress: onUploadProgress,
           );
     return await client.setRoomStateWithKey(
       id,
diff --git a/lib/src/utils/multipart_request_progress.dart b/lib/src/utils/multipart_request_progress.dart
index 7fb9335d..0b05a230 100644
--- a/lib/src/utils/multipart_request_progress.dart
+++ b/lib/src/utils/multipart_request_progress.dart
@@ -4,37 +4,6 @@ import 'dart:typed_data';
 
 import 'package:http/http.dart' as http;
 
-class MultipartRequest extends http.MultipartRequest {
-  MultipartRequest(
-    super.method,
-    super.url, {
-    this.onProgress,
-  });
-
-  final void Function(int bytes)? onProgress;
-
-  @override
-  http.ByteStream finalize() {
-    final byteStream = super.finalize();
-    if (onProgress == null) return byteStream;
-
-    final total = contentLength;
-    int bytes = 0;
-
-    final t = StreamTransformer.fromHandlers(
-      handleData: (List<int> data, EventSink<List<int>> sink) {
-        bytes += data.length;
-        onProgress?.call(bytes);
-        if (total >= bytes) {
-          sink.add(data);
-        }
-      },
-    );
-    final stream = byteStream.transform(t);
-    return http.ByteStream(stream);
-  }
-}
-
 extension ToBytesWithProgress on http.ByteStream {
   /// Collects the data of this stream in a [Uint8List].
   Future<Uint8List> toBytesWithProgress(void Function(int)? onProgress) {
diff --git a/test/client_test.dart b/test/client_test.dart
index 7bc747ff..2db2b1d9 100644
--- a/test/client_test.dart
+++ b/test/client_test.dart
@@ -1488,18 +1488,15 @@ void main() {
     });
     test('upload', () async {
       final client = await getClient();
-      final onProgressMap = <int>[];
       final response = await client.uploadContent(
         Uint8List(0),
         filename: 'file.jpeg',
-        onProgress: onProgressMap.add,
       );
       expect(response.toString(), 'mxc://example.com/AQwafuaFswefuhsfAFAgsw');
       expect(
         await client.database.getFile(response) != null,
         client.database.supportsFileStoring,
       );
-      expect(onProgressMap, [74, 183, 183, 185, 261]);
       await client.dispose(closeDatabase: true);
     });