diff --git a/packages/stream_chat/lib/src/core/models/attachment_file.freezed.dart b/packages/stream_chat/lib/src/core/models/attachment_file.freezed.dart
index 6b7b00cf..c524a742 100644
--- a/packages/stream_chat/lib/src/core/models/attachment_file.freezed.dart
+++ b/packages/stream_chat/lib/src/core/models/attachment_file.freezed.dart
@@ -14,7 +14,7 @@ final _privateConstructorUsedError = UnsupportedError(
     'It seems like you constructed your class using `MyClass._()`. This constructor is only meant to be used by freezed and you are not supposed to need it nor use it.\nPlease check the documentation here for more informations: https://github.com/rrousselGit/freezed#custom-getters-and-methods');
 
 UploadState _$UploadStateFromJson(Map<String, dynamic> json) {
-  switch (json['type']) {
+  switch (json['runtimeType']) {
     case 'preparing':
       return Preparing.fromJson(json);
     case 'inProgress':
@@ -25,8 +25,8 @@ UploadState _$UploadStateFromJson(Map<String, dynamic> json) {
       return Failed.fromJson(json);
 
     default:
-      throw CheckedFromJsonException(
-          json, 'type', 'UploadState', 'Invalid union type "${json['type']}"!');
+      throw CheckedFromJsonException(json, 'runtimeType', 'UploadState',
+          'Invalid union type "${json['runtimeType']}"!');
   }
 }
 
@@ -158,7 +158,7 @@ class _$Preparing implements Preparing {
   factory _$Preparing.fromJson(Map<String, dynamic> json) =>
       _$$PreparingFromJson(json);
 
-  @JsonKey(name: 'type')
+  @JsonKey(name: 'runtimeType')
   final String $type;
 
   @override
@@ -311,7 +311,7 @@ class _$InProgress implements InProgress {
   @override
   final int total;
 
-  @JsonKey(name: 'type')
+  @JsonKey(name: 'runtimeType')
   final String $type;
 
   @override
@@ -455,7 +455,7 @@ class _$Success implements Success {
   factory _$Success.fromJson(Map<String, dynamic> json) =>
       _$$SuccessFromJson(json);
 
-  @JsonKey(name: 'type')
+  @JsonKey(name: 'runtimeType')
   final String $type;
 
   @override
@@ -599,7 +599,7 @@ class _$Failed implements Failed {
   @override
   final String error;
 
-  @JsonKey(name: 'type')
+  @JsonKey(name: 'runtimeType')
   final String $type;
 
   @override
diff --git a/packages/stream_chat/lib/src/core/models/attachment_file.g.dart b/packages/stream_chat/lib/src/core/models/attachment_file.g.dart
index 8324482d..6b657c2a 100644
--- a/packages/stream_chat/lib/src/core/models/attachment_file.g.dart
+++ b/packages/stream_chat/lib/src/core/models/attachment_file.g.dart
@@ -23,41 +23,41 @@ Map<String, dynamic> _$AttachmentFileToJson(AttachmentFile instance) =>
     };
 
 _$Preparing _$$PreparingFromJson(Map<String, dynamic> json) => _$Preparing(
-      $type: json['type'] as String?,
+      $type: json['runtimeType'] as String?,
     );
 
 Map<String, dynamic> _$$PreparingToJson(_$Preparing instance) =>
     <String, dynamic>{
-      'type': instance.$type,
+      'runtimeType': instance.$type,
     };
 
 _$InProgress _$$InProgressFromJson(Map<String, dynamic> json) => _$InProgress(
       uploaded: json['uploaded'] as int,
       total: json['total'] as int,
-      $type: json['type'] as String?,
+      $type: json['runtimeType'] as String?,
     );
 
 Map<String, dynamic> _$$InProgressToJson(_$InProgress instance) =>
     <String, dynamic>{
       'uploaded': instance.uploaded,
       'total': instance.total,
-      'type': instance.$type,
+      'runtimeType': instance.$type,
     };
 
 _$Success _$$SuccessFromJson(Map<String, dynamic> json) => _$Success(
-      $type: json['type'] as String?,
+      $type: json['runtimeType'] as String?,
     );
 
 Map<String, dynamic> _$$SuccessToJson(_$Success instance) => <String, dynamic>{
-      'type': instance.$type,
+      'runtimeType': instance.$type,
     };
 
 _$Failed _$$FailedFromJson(Map<String, dynamic> json) => _$Failed(
       error: json['error'] as String,
-      $type: json['type'] as String?,
+      $type: json['runtimeType'] as String?,
     );
 
 Map<String, dynamic> _$$FailedToJson(_$Failed instance) => <String, dynamic>{
       'error': instance.error,
-      'type': instance.$type,
+      'runtimeType': instance.$type,
     };
diff --git a/packages/stream_chat/pubspec.yaml b/packages/stream_chat/pubspec.yaml
index ff8d5356..a723e77b 100644
--- a/packages/stream_chat/pubspec.yaml
+++ b/packages/stream_chat/pubspec.yaml
@@ -13,7 +13,7 @@ dependencies:
   collection: ^1.15.0
   dio: ^4.0.0
   equatable: ^2.0.0
-  freezed_annotation: ^0.15.0
+  freezed_annotation: ^1.0.0
   http_parser: ^4.0.0
   jose: ^0.3.2
   json_annotation: ^4.3.0
@@ -28,7 +28,7 @@ dependencies:
 dev_dependencies:
   build_runner: ^2.0.1
   dart_code_metrics: ^4.4.0
-  freezed: ^0.15.0+1
+  freezed: ^1.0.0
   json_serializable: ^6.0.1
   mocktail: ^0.2.0
   test: ^1.17.12
\ No newline at end of file