diff --git a/packages/stream_chat_flutter/lib/src/attachment/attachment.dart b/packages/stream_chat_flutter/lib/src/attachment/attachment.dart
index 42590831..96ec9ed3 100644
--- a/packages/stream_chat_flutter/lib/src/attachment/attachment.dart
+++ b/packages/stream_chat_flutter/lib/src/attachment/attachment.dart
@@ -2,5 +2,6 @@ export 'file_attachment.dart';
 export 'giphy_attachment.dart';
 export 'image_attachment.dart';
 export 'video_attachment.dart';
+export 'attachment_upload_state_builder.dart';
 export 'attachment_widget.dart'
     show AttachmentError, AttachmentSource, AttachmentSourceX;