diff --git a/packages/stream_chat/CHANGELOG.md b/packages/stream_chat/CHANGELOG.md
index d7954951..a310f336 100644
--- a/packages/stream_chat/CHANGELOG.md
+++ b/packages/stream_chat/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ✅ Added
 
+- Added support for extra data in attachment file uploader. Thanks, [@rlee1990](https://github.com/rlee1990).
+
+🔄 Changed
+
 - Deprecated `role` in `Member` in favor of `channelRole`
 
 ## 4.0.1
@@ -10,7 +14,8 @@
 
 ## 4.0.0
 
-For upgrading to V4, please refer to the [V4 Migration Guide](https://getstream.io/chat/docs/sdk/flutter/guides/migration_guide_4_0/)
+For upgrading to V4, please refer to
+the [V4 Migration Guide](https://getstream.io/chat/docs/sdk/flutter/guides/migration_guide_4_0/)
 
 ✅ Added
 
@@ -25,8 +30,10 @@ For upgrading to V4, please refer to the [V4 Migration Guide](https://getstream.
   any channel.
 - [[#1047]](https://github.com/GetStream/stream-chat-flutter/issues/1047) `own_capabilities` extraData missing after
   channel update.
-- [[#1054]](https://github.com/GetStream/stream-chat-flutter/issues/1054) Fix `Unsupported operation: Cannot remove from an unmodifiable list`.
-- [[#1033]](https://github.com/GetStream/stream-chat-flutter/issues/1033) Hard delete from dashboard does not delete message from client.
+- [[#1054]](https://github.com/GetStream/stream-chat-flutter/issues/1054)
+  Fix `Unsupported operation: Cannot remove from an unmodifiable list`.
+- [[#1033]](https://github.com/GetStream/stream-chat-flutter/issues/1033) Hard delete from dashboard does not delete
+  message from client.
 - Send only `user_id` while reconnecting.
 
 ✅ Added
@@ -59,8 +66,10 @@ For upgrading to V4, please refer to the [V4 Migration Guide](https://getstream.
   any channel.
 - [[#1047]](https://github.com/GetStream/stream-chat-flutter/issues/1047) `own_capabilities` extraData missing after
   channel update.
-- [[#1054]](https://github.com/GetStream/stream-chat-flutter/issues/1054) Fix `Unsupported operation: Cannot remove from an unmodifiable list`.
-- [[#1033]](https://github.com/GetStream/stream-chat-flutter/issues/1033) Hard delete from dashboard does not delete message from client.
+- [[#1054]](https://github.com/GetStream/stream-chat-flutter/issues/1054)
+  Fix `Unsupported operation: Cannot remove from an unmodifiable list`.
+- [[#1033]](https://github.com/GetStream/stream-chat-flutter/issues/1033) Hard delete from dashboard does not delete
+  message from client.
 - Send only `user_id` while reconnecting.
 
 ✅ Added
diff --git a/packages/stream_chat/lib/src/client/channel.dart b/packages/stream_chat/lib/src/client/channel.dart
index 4faf17c8..b25f1bbc 100644
--- a/packages/stream_chat/lib/src/client/channel.dart
+++ b/packages/stream_chat/lib/src/client/channel.dart
@@ -448,12 +448,14 @@ class Channel {
           it.file!,
           onSendProgress: onSendProgress,
           cancelToken: cancelToken,
+          extraData: it.extraData,
         ).then((it) => it.file);
       } else {
         future = sendFile(
           it.file!,
           onSendProgress: onSendProgress,
           cancelToken: cancelToken,
+          extraData: it.extraData,
         ).then((it) => it.file);
       }
       _cancelableAttachmentUploadRequest[it.id] = cancelToken;
@@ -757,6 +759,7 @@ class Channel {
     AttachmentFile file, {
     ProgressCallback? onSendProgress,
     CancelToken? cancelToken,
+    Map<String, Object?>? extraData,
   }) {
     _checkInitialized();
     return _client.sendFile(
@@ -765,6 +768,7 @@ class Channel {
       type,
       onSendProgress: onSendProgress,
       cancelToken: cancelToken,
+      extraData: extraData,
     );
   }
 
@@ -773,6 +777,7 @@ class Channel {
     AttachmentFile file, {
     ProgressCallback? onSendProgress,
     CancelToken? cancelToken,
+    Map<String, Object?>? extraData,
   }) {
     _checkInitialized();
     return _client.sendImage(
@@ -781,6 +786,7 @@ class Channel {
       type,
       onSendProgress: onSendProgress,
       cancelToken: cancelToken,
+      extraData: extraData,
     );
   }
 
@@ -805,6 +811,7 @@ class Channel {
   Future<EmptyResponse> deleteFile(
     String url, {
     CancelToken? cancelToken,
+    Map<String, Object?>? extraData,
   }) {
     _checkInitialized();
     return _client.deleteFile(
@@ -812,6 +819,7 @@ class Channel {
       id!,
       type,
       cancelToken: cancelToken,
+      extraData: extraData,
     );
   }
 
@@ -819,6 +827,7 @@ class Channel {
   Future<EmptyResponse> deleteImage(
     String url, {
     CancelToken? cancelToken,
+    Map<String, Object?>? extraData,
   }) {
     _checkInitialized();
     return _client.deleteImage(
@@ -826,6 +835,7 @@ class Channel {
       id!,
       type,
       cancelToken: cancelToken,
+      extraData: extraData,
     );
   }
 
diff --git a/packages/stream_chat/lib/src/client/client.dart b/packages/stream_chat/lib/src/client/client.dart
index d16f56c5..0f2781c1 100644
--- a/packages/stream_chat/lib/src/client/client.dart
+++ b/packages/stream_chat/lib/src/client/client.dart
@@ -728,6 +728,7 @@ class StreamChatClient {
     String channelType, {
     ProgressCallback? onSendProgress,
     CancelToken? cancelToken,
+    Map<String, Object?>? extraData,
   }) =>
       _chatApi.fileUploader.sendFile(
         file,
@@ -735,6 +736,7 @@ class StreamChatClient {
         channelType,
         onSendProgress: onSendProgress,
         cancelToken: cancelToken,
+        extraData: extraData,
       );
 
   /// Send a [image] to the [channelId] of type [channelType]
@@ -744,6 +746,7 @@ class StreamChatClient {
     String channelType, {
     ProgressCallback? onSendProgress,
     CancelToken? cancelToken,
+    Map<String, Object?>? extraData,
   }) =>
       _chatApi.fileUploader.sendImage(
         image,
@@ -751,6 +754,7 @@ class StreamChatClient {
         channelType,
         onSendProgress: onSendProgress,
         cancelToken: cancelToken,
+        extraData: extraData,
       );
 
   /// Delete a file from this channel
@@ -759,12 +763,14 @@ class StreamChatClient {
     String channelId,
     String channelType, {
     CancelToken? cancelToken,
+    Map<String, Object?>? extraData,
   }) =>
       _chatApi.fileUploader.deleteFile(
         url,
         channelId,
         channelType,
         cancelToken: cancelToken,
+        extraData: extraData,
       );
 
   /// Delete an image from this channel
@@ -773,12 +779,14 @@ class StreamChatClient {
     String channelId,
     String channelType, {
     CancelToken? cancelToken,
+    Map<String, Object?>? extraData,
   }) =>
       _chatApi.fileUploader.deleteImage(
         url,
         channelId,
         channelType,
         cancelToken: cancelToken,
+        extraData: extraData,
       );
 
   /// Replaces the [channelId] of type [ChannelType] data with [data].
diff --git a/packages/stream_chat/lib/src/core/api/attachment_file_uploader.dart b/packages/stream_chat/lib/src/core/api/attachment_file_uploader.dart
index d6dc249f..096b2c2d 100644
--- a/packages/stream_chat/lib/src/core/api/attachment_file_uploader.dart
+++ b/packages/stream_chat/lib/src/core/api/attachment_file_uploader.dart
@@ -16,6 +16,7 @@ abstract class AttachmentFileUploader {
     String channelType, {
     ProgressCallback? onSendProgress,
     CancelToken? cancelToken,
+    Map<String, Object?>? extraData,
   });
 
   /// Uploads a [file] to the given channel.
@@ -29,6 +30,7 @@ abstract class AttachmentFileUploader {
     String channelType, {
     ProgressCallback? onSendProgress,
     CancelToken? cancelToken,
+    Map<String, Object?>? extraData,
   });
 
   /// Deletes a image using its [url] from the given channel.
@@ -40,6 +42,7 @@ abstract class AttachmentFileUploader {
     String channelId,
     String channelType, {
     CancelToken? cancelToken,
+    Map<String, Object?>? extraData,
   });
 
   /// Deletes a file using its [url] from the given channel.
@@ -51,6 +54,7 @@ abstract class AttachmentFileUploader {
     String channelId,
     String channelType, {
     CancelToken? cancelToken,
+    Map<String, Object?>? extraData,
   });
 }
 
@@ -68,6 +72,7 @@ class StreamAttachmentFileUploader implements AttachmentFileUploader {
     String channelType, {
     ProgressCallback? onSendProgress,
     CancelToken? cancelToken,
+    Map<String, Object?>? extraData,
   }) async {
     final multiPartFile = await file.toMultipartFile();
     final response = await _client.postFile(
@@ -86,6 +91,7 @@ class StreamAttachmentFileUploader implements AttachmentFileUploader {
     String channelType, {
     ProgressCallback? onSendProgress,
     CancelToken? cancelToken,
+    Map<String, Object?>? extraData,
   }) async {
     final multiPartFile = await file.toMultipartFile();
     final response = await _client.postFile(
@@ -103,6 +109,7 @@ class StreamAttachmentFileUploader implements AttachmentFileUploader {
     String channelId,
     String channelType, {
     CancelToken? cancelToken,
+    Map<String, Object?>? extraData,
   }) async {
     final response = await _client.delete(
       '/channels/$channelType/$channelId/image',
@@ -118,6 +125,7 @@ class StreamAttachmentFileUploader implements AttachmentFileUploader {
     String channelId,
     String channelType, {
     CancelToken? cancelToken,
+    Map<String, Object?>? extraData,
   }) async {
     final response = await _client.delete(
       '/channels/$channelType/$channelId/file',
diff --git a/packages/stream_chat/test/src/client/channel_test.dart b/packages/stream_chat/test/src/client/channel_test.dart
index 9452a433..f90430f2 100644
--- a/packages/stream_chat/test/src/client/channel_test.dart
+++ b/packages/stream_chat/test/src/client/channel_test.dart
@@ -313,6 +313,7 @@ void main() {
               channelType,
               onSendProgress: any(named: 'onSendProgress'),
               cancelToken: any(named: 'cancelToken'),
+              extraData: any(named: 'extraData'),
             )).thenAnswer((_) async => sendImageResponse);
 
         when(() => client.sendFile(
@@ -321,6 +322,7 @@ void main() {
               channelType,
               onSendProgress: any(named: 'onSendProgress'),
               cancelToken: any(named: 'cancelToken'),
+              extraData: any(named: 'extraData'),
             )).thenAnswer((_) async => sendFileResponse);
 
         when(() => client.sendMessage(
@@ -440,6 +442,7 @@ void main() {
               channelType,
               onSendProgress: any(named: 'onSendProgress'),
               cancelToken: any(named: 'cancelToken'),
+              extraData: any(named: 'extraData'),
             )).called(2);
 
         verify(() => client.sendFile(
@@ -448,6 +451,7 @@ void main() {
               channelType,
               onSendProgress: any(named: 'onSendProgress'),
               cancelToken: any(named: 'cancelToken'),
+              extraData: any(named: 'extraData'),
             )).called(1);
 
         verify(() => client.sendMessage(
@@ -524,6 +528,7 @@ void main() {
               channelType,
               onSendProgress: any(named: 'onSendProgress'),
               cancelToken: any(named: 'cancelToken'),
+              extraData: any(named: 'extraData'),
             )).thenAnswer((_) async => sendImageResponse);
 
         when(() => client.sendFile(
@@ -532,6 +537,7 @@ void main() {
               channelType,
               onSendProgress: any(named: 'onSendProgress'),
               cancelToken: any(named: 'cancelToken'),
+              extraData: any(named: 'extraData'),
             )).thenAnswer((_) async => sendFileResponse);
 
         when(() => client.updateMessage(
@@ -649,6 +655,7 @@ void main() {
               channelType,
               onSendProgress: any(named: 'onSendProgress'),
               cancelToken: any(named: 'cancelToken'),
+              extraData: any(named: 'extraData'),
             )).called(2);
 
         verify(() => client.sendFile(
@@ -657,6 +664,7 @@ void main() {
               channelType,
               onSendProgress: any(named: 'onSendProgress'),
               cancelToken: any(named: 'cancelToken'),
+              extraData: any(named: 'extraData'),
             )).called(1);
 
         verify(() => client.updateMessage(