diff --git a/lib/src/events.dart b/lib/src/events.dart
index 9f1db806..8b2f7975 100644
--- a/lib/src/events.dart
+++ b/lib/src/events.dart
@@ -115,6 +115,21 @@ class RoomMetadataChangedEvent with RoomEvent {
   String toString() => '${runtimeType}()';
 }
 
+/// Participant's attributes have changed.
+/// Emitted by [Room].
+class ParticipantAttributesChanged with RoomEvent, ParticipantEvent {
+  final Participant participant;
+  final Map<String, String> attributes;
+
+  const ParticipantAttributesChanged({
+    required this.participant,
+    required this.attributes,
+  });
+
+  @override
+  String toString() => '${runtimeType}(participant: ${participant})';
+}
+
 /// Room recording status has changed.
 /// Emitted by [Room].
 class RoomRecordingStatusChanged with RoomEvent {
diff --git a/lib/src/participant/local.dart b/lib/src/participant/local.dart
index 66a27713..3703d27d 100644
--- a/lib/src/participant/local.dart
+++ b/lib/src/participant/local.dart
@@ -466,6 +466,15 @@ class LocalParticipant extends Participant<LocalTrackPublication> {
     ));
   }
 
+  /// Sets and updates the attributes of the local participant.
+  /// @attributes key-value pairs to set
+  void setAttributes(Map<String, String> attributes) {
+    room.engine.signalClient
+        .sendUpdateLocalMetadata(lk_rtc.UpdateParticipantMetadata(
+      attributes: attributes,
+    ));
+  }
+
   /// Sets and updates the name of the local participant.
   ///  Note: this requires `CanUpdateOwnMetadata` permission encoded in the token.
   ///  @param name
diff --git a/lib/src/participant/participant.dart b/lib/src/participant/participant.dart
index 4e2676fd..33e5501f 100644
--- a/lib/src/participant/participant.dart
+++ b/lib/src/participant/participant.dart
@@ -26,6 +26,7 @@ import '../publication/track_publication.dart';
 import '../support/disposable.dart';
 import '../types/other.dart';
 import '../types/participant_permissions.dart';
+import '../utils.dart';
 
 /// Represents a Participant in the room, notifies changes via delegates as
 /// well as ChangeNotifier/providers.
@@ -78,6 +79,11 @@ abstract class Participant<T extends TrackPublication>
   ParticipantPermissions _permissions = const ParticipantPermissions();
   ParticipantPermissions get permissions => _permissions;
 
+  /// Attributes associated with the participant
+  UnmodifiableMapView<String, String> get attributes =>
+      UnmodifiableMapView(_attributes);
+  Map<String, String> _attributes = {};
+
   /// when the participant joined the room
   DateTime get joinedAt {
     final pi = _participantInfo;
@@ -170,6 +176,18 @@ abstract class Participant<T extends TrackPublication>
     }
   }
 
+  void _setAttributes(Map<String, String> attrs) {
+    final diff = mapDiff(_attributes, attrs)
+        .map((k, v) => MapEntry(k as String, v as String));
+    _attributes = attrs;
+    if (diff.isNotEmpty) {
+      [
+        events,
+        room.events
+      ].emit(ParticipantAttributesChanged(participant: this, attributes: diff));
+    }
+  }
+
   @internal
   void updateConnectionQuality(ConnectionQuality quality) {
     if (_connectionQuality == quality) return;
@@ -196,6 +214,8 @@ abstract class Participant<T extends TrackPublication>
     if (info.metadata.isNotEmpty) {
       _setMetadata(info.metadata);
     }
+
+    _setAttributes(info.attributes);
     _participantInfo = info;
     setPermissions(info.permission.toLKType());
 
diff --git a/lib/src/proto/livekit_models.pb.dart b/lib/src/proto/livekit_models.pb.dart
index 35de7544..cf1719b7 100644
--- a/lib/src/proto/livekit_models.pb.dart
+++ b/lib/src/proto/livekit_models.pb.dart
@@ -459,10 +459,10 @@ class ParticipantPermission extends $pb.GeneratedMessage {
     $core.bool? canPublish,
     $core.bool? canPublishData,
     $core.bool? hidden,
-    $core.bool? recorder,
+    @$core.Deprecated('This field is deprecated.') $core.bool? recorder,
     $core.Iterable<TrackSource>? canPublishSources,
     $core.bool? canUpdateMetadata,
-    $core.bool? agent,
+    @$core.Deprecated('This field is deprecated.') $core.bool? agent,
   }) {
     final $result = create();
     if (canSubscribe != null) {
@@ -478,6 +478,7 @@ class ParticipantPermission extends $pb.GeneratedMessage {
       $result.hidden = hidden;
     }
     if (recorder != null) {
+      // ignore: deprecated_member_use_from_same_package
       $result.recorder = recorder;
     }
     if (canPublishSources != null) {
@@ -487,6 +488,7 @@ class ParticipantPermission extends $pb.GeneratedMessage {
       $result.canUpdateMetadata = canUpdateMetadata;
     }
     if (agent != null) {
+      // ignore: deprecated_member_use_from_same_package
       $result.agent = agent;
     }
     return $result;
@@ -595,15 +597,20 @@ class ParticipantPermission extends $pb.GeneratedMessage {
   void clearHidden() => clearField(7);
 
   /// indicates it's a recorder instance
+  /// deprecated: use ParticipantInfo.kind instead
+  @$core.Deprecated('This field is deprecated.')
   @$pb.TagNumber(8)
   $core.bool get recorder => $_getBF(4);
+  @$core.Deprecated('This field is deprecated.')
   @$pb.TagNumber(8)
   set recorder($core.bool v) {
     $_setBool(4, v);
   }
 
+  @$core.Deprecated('This field is deprecated.')
   @$pb.TagNumber(8)
   $core.bool hasRecorder() => $_has(4);
+  @$core.Deprecated('This field is deprecated.')
   @$pb.TagNumber(8)
   void clearRecorder() => clearField(8);
 
@@ -611,7 +618,7 @@ class ParticipantPermission extends $pb.GeneratedMessage {
   @$pb.TagNumber(9)
   $core.List<TrackSource> get canPublishSources => $_getList(5);
 
-  /// indicates that participant can update own metadata
+  /// indicates that participant can update own metadata and attributes
   @$pb.TagNumber(10)
   $core.bool get canUpdateMetadata => $_getBF(6);
   @$pb.TagNumber(10)
@@ -625,15 +632,20 @@ class ParticipantPermission extends $pb.GeneratedMessage {
   void clearCanUpdateMetadata() => clearField(10);
 
   /// indicates that participant is an agent
+  /// deprecated: use ParticipantInfo.kind instead
+  @$core.Deprecated('This field is deprecated.')
   @$pb.TagNumber(11)
   $core.bool get agent => $_getBF(7);
+  @$core.Deprecated('This field is deprecated.')
   @$pb.TagNumber(11)
   set agent($core.bool v) {
     $_setBool(7, v);
   }
 
+  @$core.Deprecated('This field is deprecated.')
   @$pb.TagNumber(11)
   $core.bool hasAgent() => $_has(7);
+  @$core.Deprecated('This field is deprecated.')
   @$pb.TagNumber(11)
   void clearAgent() => clearField(11);
 }
@@ -652,6 +664,7 @@ class ParticipantInfo extends $pb.GeneratedMessage {
     $core.String? region,
     $core.bool? isPublisher,
     ParticipantInfo_Kind? kind,
+    $core.Map<$core.String, $core.String>? attributes,
   }) {
     final $result = create();
     if (sid != null) {
@@ -690,6 +703,9 @@ class ParticipantInfo extends $pb.GeneratedMessage {
     if (kind != null) {
       $result.kind = kind;
     }
+    if (attributes != null) {
+      $result.attributes.addAll(attributes);
+    }
     return $result;
   }
   ParticipantInfo._() : super();
@@ -726,6 +742,11 @@ class ParticipantInfo extends $pb.GeneratedMessage {
         defaultOrMaker: ParticipantInfo_Kind.STANDARD,
         valueOf: ParticipantInfo_Kind.valueOf,
         enumValues: ParticipantInfo_Kind.values)
+    ..m<$core.String, $core.String>(15, _omitFieldNames ? '' : 'attributes',
+        entryClassName: 'ParticipantInfo.AttributesEntry',
+        keyFieldType: $pb.PbFieldType.OS,
+        valueFieldType: $pb.PbFieldType.OS,
+        packageName: const $pb.PackageName('livekit'))
     ..hasRequiredFields = false;
 
   @$core.Deprecated('Using this can add significant overhead to your binary. '
@@ -890,6 +911,9 @@ class ParticipantInfo extends $pb.GeneratedMessage {
   $core.bool hasKind() => $_has(11);
   @$pb.TagNumber(14)
   void clearKind() => clearField(14);
+
+  @$pb.TagNumber(15)
+  $core.Map<$core.String, $core.String> get attributes => $_getMap(12);
 }
 
 class Encryption extends $pb.GeneratedMessage {
diff --git a/lib/src/proto/livekit_models.pbjson.dart b/lib/src/proto/livekit_models.pbjson.dart
index 97f045d7..854b6a21 100644
--- a/lib/src/proto/livekit_models.pbjson.dart
+++ b/lib/src/proto/livekit_models.pbjson.dart
@@ -308,7 +308,14 @@ const ParticipantPermission$json = {
       '10': 'canPublishSources'
     },
     {'1': 'hidden', '3': 7, '4': 1, '5': 8, '10': 'hidden'},
-    {'1': 'recorder', '3': 8, '4': 1, '5': 8, '10': 'recorder'},
+    {
+      '1': 'recorder',
+      '3': 8,
+      '4': 1,
+      '5': 8,
+      '8': {'3': true},
+      '10': 'recorder',
+    },
     {
       '1': 'can_update_metadata',
       '3': 10,
@@ -316,7 +323,14 @@ const ParticipantPermission$json = {
       '5': 8,
       '10': 'canUpdateMetadata'
     },
-    {'1': 'agent', '3': 11, '4': 1, '5': 8, '10': 'agent'},
+    {
+      '1': 'agent',
+      '3': 11,
+      '4': 1,
+      '5': 8,
+      '8': {'3': true},
+      '10': 'agent',
+    },
   ],
 };
 
@@ -326,8 +340,9 @@ final $typed_data.Uint8List participantPermissionDescriptor = $convert.base64Dec
     'NyaWJlEh8KC2Nhbl9wdWJsaXNoGAIgASgIUgpjYW5QdWJsaXNoEigKEGNhbl9wdWJsaXNoX2Rh'
     'dGEYAyABKAhSDmNhblB1Ymxpc2hEYXRhEkQKE2Nhbl9wdWJsaXNoX3NvdXJjZXMYCSADKA4yFC'
     '5saXZla2l0LlRyYWNrU291cmNlUhFjYW5QdWJsaXNoU291cmNlcxIWCgZoaWRkZW4YByABKAhS'
-    'BmhpZGRlbhIaCghyZWNvcmRlchgIIAEoCFIIcmVjb3JkZXISLgoTY2FuX3VwZGF0ZV9tZXRhZG'
-    'F0YRgKIAEoCFIRY2FuVXBkYXRlTWV0YWRhdGESFAoFYWdlbnQYCyABKAhSBWFnZW50');
+    'BmhpZGRlbhIeCghyZWNvcmRlchgIIAEoCEICGAFSCHJlY29yZGVyEi4KE2Nhbl91cGRhdGVfbW'
+    'V0YWRhdGEYCiABKAhSEWNhblVwZGF0ZU1ldGFkYXRhEhgKBWFnZW50GAsgASgIQgIYAVIFYWdl'
+    'bnQ=');
 
 @$core.Deprecated('Use participantInfoDescriptor instead')
 const ParticipantInfo$json = {
@@ -373,10 +388,29 @@ const ParticipantInfo$json = {
       '6': '.livekit.ParticipantInfo.Kind',
       '10': 'kind'
     },
+    {
+      '1': 'attributes',
+      '3': 15,
+      '4': 3,
+      '5': 11,
+      '6': '.livekit.ParticipantInfo.AttributesEntry',
+      '10': 'attributes'
+    },
   ],
+  '3': [ParticipantInfo_AttributesEntry$json],
   '4': [ParticipantInfo_State$json, ParticipantInfo_Kind$json],
 };
 
+@$core.Deprecated('Use participantInfoDescriptor instead')
+const ParticipantInfo_AttributesEntry$json = {
+  '1': 'AttributesEntry',
+  '2': [
+    {'1': 'key', '3': 1, '4': 1, '5': 9, '10': 'key'},
+    {'1': 'value', '3': 2, '4': 1, '5': 9, '10': 'value'},
+  ],
+  '7': {'7': true},
+};
+
 @$core.Deprecated('Use participantInfoDescriptor instead')
 const ParticipantInfo_State$json = {
   '1': 'State',
@@ -409,10 +443,12 @@ final $typed_data.Uint8List participantInfoDescriptor = $convert.base64Decode(
     'bmFtZRgJIAEoCVIEbmFtZRIYCgd2ZXJzaW9uGAogASgNUgd2ZXJzaW9uEj4KCnBlcm1pc3Npb2'
     '4YCyABKAsyHi5saXZla2l0LlBhcnRpY2lwYW50UGVybWlzc2lvblIKcGVybWlzc2lvbhIWCgZy'
     'ZWdpb24YDCABKAlSBnJlZ2lvbhIhCgxpc19wdWJsaXNoZXIYDSABKAhSC2lzUHVibGlzaGVyEj'
-    'EKBGtpbmQYDiABKA4yHS5saXZla2l0LlBhcnRpY2lwYW50SW5mby5LaW5kUgRraW5kIj4KBVN0'
-    'YXRlEgsKB0pPSU5JTkcQABIKCgZKT0lORUQQARIKCgZBQ1RJVkUQAhIQCgxESVNDT05ORUNURU'
-    'QQAyJBCgRLaW5kEgwKCFNUQU5EQVJEEAASCwoHSU5HUkVTUxABEgoKBkVHUkVTUxACEgcKA1NJ'
-    'UBADEgkKBUFHRU5UEAQ=');
+    'EKBGtpbmQYDiABKA4yHS5saXZla2l0LlBhcnRpY2lwYW50SW5mby5LaW5kUgRraW5kEkgKCmF0'
+    'dHJpYnV0ZXMYDyADKAsyKC5saXZla2l0LlBhcnRpY2lwYW50SW5mby5BdHRyaWJ1dGVzRW50cn'
+    'lSCmF0dHJpYnV0ZXMaPQoPQXR0cmlidXRlc0VudHJ5EhAKA2tleRgBIAEoCVIDa2V5EhQKBXZh'
+    'bHVlGAIgASgJUgV2YWx1ZToCOAEiPgoFU3RhdGUSCwoHSk9JTklORxAAEgoKBkpPSU5FRBABEg'
+    'oKBkFDVElWRRACEhAKDERJU0NPTk5FQ1RFRBADIkEKBEtpbmQSDAoIU1RBTkRBUkQQABILCgdJ'
+    'TkdSRVNTEAESCgoGRUdSRVNTEAISBwoDU0lQEAMSCQoFQUdFTlQQBA==');
 
 @$core.Deprecated('Use encryptionDescriptor instead')
 const Encryption$json = {
diff --git a/lib/src/proto/livekit_rtc.pb.dart b/lib/src/proto/livekit_rtc.pb.dart
index 1980f1fc..ddf6ebeb 100644
--- a/lib/src/proto/livekit_rtc.pb.dart
+++ b/lib/src/proto/livekit_rtc.pb.dart
@@ -410,7 +410,8 @@ class SignalRequest extends $pb.GeneratedMessage {
   @$pb.TagNumber(14)
   void clearPing() => clearField(14);
 
-  /// update a participant's own metadata and/or name
+  /// update a participant's own metadata, name, or attributes
+  /// requires canUpdateOwnParticipantMetadata permission
   @$pb.TagNumber(15)
   UpdateParticipantMetadata get updateMetadata => $_getN(13);
   @$pb.TagNumber(15)
@@ -491,6 +492,7 @@ enum SignalResponse_Message {
   reconnect,
   pongResp,
   subscriptionResponse,
+  errorResponse,
   notSet
 }
 
@@ -516,6 +518,7 @@ class SignalResponse extends $pb.GeneratedMessage {
     ReconnectResponse? reconnect,
     Pong? pongResp,
     SubscriptionResponse? subscriptionResponse,
+    ErrorResponse? errorResponse,
   }) {
     final $result = create();
     if (join != null) {
@@ -578,6 +581,9 @@ class SignalResponse extends $pb.GeneratedMessage {
     if (subscriptionResponse != null) {
       $result.subscriptionResponse = subscriptionResponse;
     }
+    if (errorResponse != null) {
+      $result.errorResponse = errorResponse;
+    }
     return $result;
   }
   SignalResponse._() : super();
@@ -610,6 +616,7 @@ class SignalResponse extends $pb.GeneratedMessage {
     19: SignalResponse_Message.reconnect,
     20: SignalResponse_Message.pongResp,
     21: SignalResponse_Message.subscriptionResponse,
+    22: SignalResponse_Message.errorResponse,
     0: SignalResponse_Message.notSet
   };
   static final $pb.BuilderInfo _i = $pb.BuilderInfo(
@@ -636,7 +643,8 @@ class SignalResponse extends $pb.GeneratedMessage {
       18,
       19,
       20,
-      21
+      21,
+      22
     ])
     ..aOM<JoinResponse>(1, _omitFieldNames ? '' : 'join',
         subBuilder: JoinResponse.create)
@@ -680,6 +688,8 @@ class SignalResponse extends $pb.GeneratedMessage {
     ..aOM<SubscriptionResponse>(
         21, _omitFieldNames ? '' : 'subscriptionResponse',
         subBuilder: SubscriptionResponse.create)
+    ..aOM<ErrorResponse>(22, _omitFieldNames ? '' : 'errorResponse',
+        subBuilder: ErrorResponse.create)
     ..hasRequiredFields = false;
 
   @$core.Deprecated('Using this can add significant overhead to your binary. '
@@ -1006,6 +1016,21 @@ class SignalResponse extends $pb.GeneratedMessage {
   void clearSubscriptionResponse() => clearField(21);
   @$pb.TagNumber(21)
   SubscriptionResponse ensureSubscriptionResponse() => $_ensure(19);
+
+  /// Errors relating to user inititated requests that carry a `request_id`
+  @$pb.TagNumber(22)
+  ErrorResponse get errorResponse => $_getN(20);
+  @$pb.TagNumber(22)
+  set errorResponse(ErrorResponse v) {
+    setField(22, v);
+  }
+
+  @$pb.TagNumber(22)
+  $core.bool hasErrorResponse() => $_has(20);
+  @$pb.TagNumber(22)
+  void clearErrorResponse() => clearField(22);
+  @$pb.TagNumber(22)
+  ErrorResponse ensureErrorResponse() => $_ensure(20);
 }
 
 class SimulcastCodec extends $pb.GeneratedMessage {
@@ -2790,6 +2815,8 @@ class UpdateParticipantMetadata extends $pb.GeneratedMessage {
   factory UpdateParticipantMetadata({
     $core.String? metadata,
     $core.String? name,
+    $core.Map<$core.String, $core.String>? attributes,
+    $core.int? requestId,
   }) {
     final $result = create();
     if (metadata != null) {
@@ -2798,6 +2825,12 @@ class UpdateParticipantMetadata extends $pb.GeneratedMessage {
     if (name != null) {
       $result.name = name;
     }
+    if (attributes != null) {
+      $result.attributes.addAll(attributes);
+    }
+    if (requestId != null) {
+      $result.requestId = requestId;
+    }
     return $result;
   }
   UpdateParticipantMetadata._() : super();
@@ -2814,6 +2847,12 @@ class UpdateParticipantMetadata extends $pb.GeneratedMessage {
       createEmptyInstance: create)
     ..aOS(1, _omitFieldNames ? '' : 'metadata')
     ..aOS(2, _omitFieldNames ? '' : 'name')
+    ..m<$core.String, $core.String>(3, _omitFieldNames ? '' : 'attributes',
+        entryClassName: 'UpdateParticipantMetadata.AttributesEntry',
+        keyFieldType: $pb.PbFieldType.OS,
+        valueFieldType: $pb.PbFieldType.OS,
+        packageName: const $pb.PackageName('livekit'))
+    ..a<$core.int>(4, _omitFieldNames ? '' : 'requestId', $pb.PbFieldType.OU3)
     ..hasRequiredFields = false;
 
   @$core.Deprecated('Using this can add significant overhead to your binary. '
@@ -2864,6 +2903,23 @@ class UpdateParticipantMetadata extends $pb.GeneratedMessage {
   $core.bool hasName() => $_has(1);
   @$pb.TagNumber(2)
   void clearName() => clearField(2);
+
+  /// attributes to update. it only updates attributes that have been set
+  /// to delete attributes, set the value to an empty string
+  @$pb.TagNumber(3)
+  $core.Map<$core.String, $core.String> get attributes => $_getMap(2);
+
+  @$pb.TagNumber(4)
+  $core.int get requestId => $_getIZ(3);
+  @$pb.TagNumber(4)
+  set requestId($core.int v) {
+    $_setUnsignedInt32(3, v);
+  }
+
+  @$pb.TagNumber(4)
+  $core.bool hasRequestId() => $_has(3);
+  @$pb.TagNumber(4)
+  void clearRequestId() => clearField(4);
 }
 
 class ICEServer extends $pb.GeneratedMessage {
@@ -4743,6 +4799,105 @@ class SubscriptionResponse extends $pb.GeneratedMessage {
   void clearErr() => clearField(2);
 }
 
+class ErrorResponse extends $pb.GeneratedMessage {
+  factory ErrorResponse({
+    $core.int? requestId,
+    ErrorResponse_Reason? reason,
+    $core.String? message,
+  }) {
+    final $result = create();
+    if (requestId != null) {
+      $result.requestId = requestId;
+    }
+    if (reason != null) {
+      $result.reason = reason;
+    }
+    if (message != null) {
+      $result.message = message;
+    }
+    return $result;
+  }
+  ErrorResponse._() : super();
+  factory ErrorResponse.fromBuffer($core.List<$core.int> i,
+          [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) =>
+      create()..mergeFromBuffer(i, r);
+  factory ErrorResponse.fromJson($core.String i,
+          [$pb.ExtensionRegistry r = $pb.ExtensionRegistry.EMPTY]) =>
+      create()..mergeFromJson(i, r);
+
+  static final $pb.BuilderInfo _i = $pb.BuilderInfo(
+      _omitMessageNames ? '' : 'ErrorResponse',
+      package: const $pb.PackageName(_omitMessageNames ? '' : 'livekit'),
+      createEmptyInstance: create)
+    ..a<$core.int>(1, _omitFieldNames ? '' : 'requestId', $pb.PbFieldType.OU3)
+    ..e<ErrorResponse_Reason>(
+        2, _omitFieldNames ? '' : 'reason', $pb.PbFieldType.OE,
+        defaultOrMaker: ErrorResponse_Reason.UNKNOWN,
+        valueOf: ErrorResponse_Reason.valueOf,
+        enumValues: ErrorResponse_Reason.values)
+    ..aOS(3, _omitFieldNames ? '' : 'message')
+    ..hasRequiredFields = false;
+
+  @$core.Deprecated('Using this can add significant overhead to your binary. '
+      'Use [GeneratedMessageGenericExtensions.deepCopy] instead. '
+      'Will be removed in next major version')
+  ErrorResponse clone() => ErrorResponse()..mergeFromMessage(this);
+  @$core.Deprecated('Using this can add significant overhead to your binary. '
+      'Use [GeneratedMessageGenericExtensions.rebuild] instead. '
+      'Will be removed in next major version')
+  ErrorResponse copyWith(void Function(ErrorResponse) updates) =>
+      super.copyWith((message) => updates(message as ErrorResponse))
+          as ErrorResponse;
+
+  $pb.BuilderInfo get info_ => _i;
+
+  @$core.pragma('dart2js:noInline')
+  static ErrorResponse create() => ErrorResponse._();
+  ErrorResponse createEmptyInstance() => create();
+  static $pb.PbList<ErrorResponse> createRepeated() =>
+      $pb.PbList<ErrorResponse>();
+  @$core.pragma('dart2js:noInline')
+  static ErrorResponse getDefault() => _defaultInstance ??=
+      $pb.GeneratedMessage.$_defaultFor<ErrorResponse>(create);
+  static ErrorResponse? _defaultInstance;
+
+  @$pb.TagNumber(1)
+  $core.int get requestId => $_getIZ(0);
+  @$pb.TagNumber(1)
+  set requestId($core.int v) {
+    $_setUnsignedInt32(0, v);
+  }
+
+  @$pb.TagNumber(1)
+  $core.bool hasRequestId() => $_has(0);
+  @$pb.TagNumber(1)
+  void clearRequestId() => clearField(1);
+
+  @$pb.TagNumber(2)
+  ErrorResponse_Reason get reason => $_getN(1);
+  @$pb.TagNumber(2)
+  set reason(ErrorResponse_Reason v) {
+    setField(2, v);
+  }
+
+  @$pb.TagNumber(2)
+  $core.bool hasReason() => $_has(1);
+  @$pb.TagNumber(2)
+  void clearReason() => clearField(2);
+
+  @$pb.TagNumber(3)
+  $core.String get message => $_getSZ(2);
+  @$pb.TagNumber(3)
+  set message($core.String v) {
+    $_setString(2, v);
+  }
+
+  @$pb.TagNumber(3)
+  $core.bool hasMessage() => $_has(2);
+  @$pb.TagNumber(3)
+  void clearMessage() => clearField(3);
+}
+
 const _omitFieldNames = $core.bool.fromEnvironment('protobuf.omit_field_names');
 const _omitMessageNames =
     $core.bool.fromEnvironment('protobuf.omit_message_names');
diff --git a/lib/src/proto/livekit_rtc.pbenum.dart b/lib/src/proto/livekit_rtc.pbenum.dart
index f970e468..33ec6fb9 100644
--- a/lib/src/proto/livekit_rtc.pbenum.dart
+++ b/lib/src/proto/livekit_rtc.pbenum.dart
@@ -92,4 +92,28 @@ class LeaveRequest_Action extends $pb.ProtobufEnum {
   const LeaveRequest_Action._($core.int v, $core.String n) : super(v, n);
 }
 
+class ErrorResponse_Reason extends $pb.ProtobufEnum {
+  static const ErrorResponse_Reason UNKNOWN =
+      ErrorResponse_Reason._(0, _omitEnumNames ? '' : 'UNKNOWN');
+  static const ErrorResponse_Reason NOT_FOUND =
+      ErrorResponse_Reason._(1, _omitEnumNames ? '' : 'NOT_FOUND');
+  static const ErrorResponse_Reason NOT_ALLOWED =
+      ErrorResponse_Reason._(2, _omitEnumNames ? '' : 'NOT_ALLOWED');
+  static const ErrorResponse_Reason INVALID_ARGUMENT =
+      ErrorResponse_Reason._(3, _omitEnumNames ? '' : 'INVALID_ARGUMENT');
+
+  static const $core.List<ErrorResponse_Reason> values = <ErrorResponse_Reason>[
+    UNKNOWN,
+    NOT_FOUND,
+    NOT_ALLOWED,
+    INVALID_ARGUMENT,
+  ];
+
+  static final $core.Map<$core.int, ErrorResponse_Reason> _byValue =
+      $pb.ProtobufEnum.initByValue(values);
+  static ErrorResponse_Reason? valueOf($core.int value) => _byValue[value];
+
+  const ErrorResponse_Reason._($core.int v, $core.String n) : super(v, n);
+}
+
 const _omitEnumNames = $core.bool.fromEnvironment('protobuf.omit_enum_names');
diff --git a/lib/src/proto/livekit_rtc.pbjson.dart b/lib/src/proto/livekit_rtc.pbjson.dart
index 00de12b1..2a0da460 100644
--- a/lib/src/proto/livekit_rtc.pbjson.dart
+++ b/lib/src/proto/livekit_rtc.pbjson.dart
@@ -407,6 +407,15 @@ const SignalResponse$json = {
       '9': 0,
       '10': 'subscriptionResponse'
     },
+    {
+      '1': 'error_response',
+      '3': 22,
+      '4': 1,
+      '5': 11,
+      '6': '.livekit.ErrorResponse',
+      '9': 0,
+      '10': 'errorResponse'
+    },
   ],
   '8': [
     {'1': 'message'},
@@ -438,7 +447,8 @@ final $typed_data.Uint8List signalResponseDescriptor = $convert.base64Decode(
     'dmVraXQuUmVjb25uZWN0UmVzcG9uc2VIAFIJcmVjb25uZWN0EiwKCXBvbmdfcmVzcBgUIAEoCz'
     'INLmxpdmVraXQuUG9uZ0gAUghwb25nUmVzcBJUChVzdWJzY3JpcHRpb25fcmVzcG9uc2UYFSAB'
     'KAsyHS5saXZla2l0LlN1YnNjcmlwdGlvblJlc3BvbnNlSABSFHN1YnNjcmlwdGlvblJlc3Bvbn'
-    'NlQgkKB21lc3NhZ2U=');
+    'NlEj8KDmVycm9yX3Jlc3BvbnNlGBYgASgLMhYubGl2ZWtpdC5FcnJvclJlc3BvbnNlSABSDWVy'
+    'cm9yUmVzcG9uc2VCCQoHbWVzc2FnZQ==');
 
 @$core.Deprecated('Use simulcastCodecDescriptor instead')
 const SimulcastCodec$json = {
@@ -900,14 +910,36 @@ const UpdateParticipantMetadata$json = {
   '2': [
     {'1': 'metadata', '3': 1, '4': 1, '5': 9, '10': 'metadata'},
     {'1': 'name', '3': 2, '4': 1, '5': 9, '10': 'name'},
+    {
+      '1': 'attributes',
+      '3': 3,
+      '4': 3,
+      '5': 11,
+      '6': '.livekit.UpdateParticipantMetadata.AttributesEntry',
+      '10': 'attributes'
+    },
+    {'1': 'request_id', '3': 4, '4': 1, '5': 13, '10': 'requestId'},
+  ],
+  '3': [UpdateParticipantMetadata_AttributesEntry$json],
+};
+
+@$core.Deprecated('Use updateParticipantMetadataDescriptor instead')
+const UpdateParticipantMetadata_AttributesEntry$json = {
+  '1': 'AttributesEntry',
+  '2': [
+    {'1': 'key', '3': 1, '4': 1, '5': 9, '10': 'key'},
+    {'1': 'value', '3': 2, '4': 1, '5': 9, '10': 'value'},
   ],
+  '7': {'7': true},
 };
 
 /// Descriptor for `UpdateParticipantMetadata`. Decode as a `google.protobuf.DescriptorProto`.
-final $typed_data.Uint8List updateParticipantMetadataDescriptor =
-    $convert.base64Decode(
-        'ChlVcGRhdGVQYXJ0aWNpcGFudE1ldGFkYXRhEhoKCG1ldGFkYXRhGAEgASgJUghtZXRhZGF0YR'
-        'ISCgRuYW1lGAIgASgJUgRuYW1l');
+final $typed_data.Uint8List updateParticipantMetadataDescriptor = $convert.base64Decode(
+    'ChlVcGRhdGVQYXJ0aWNpcGFudE1ldGFkYXRhEhoKCG1ldGFkYXRhGAEgASgJUghtZXRhZGF0YR'
+    'ISCgRuYW1lGAIgASgJUgRuYW1lElIKCmF0dHJpYnV0ZXMYAyADKAsyMi5saXZla2l0LlVwZGF0'
+    'ZVBhcnRpY2lwYW50TWV0YWRhdGEuQXR0cmlidXRlc0VudHJ5UgphdHRyaWJ1dGVzEh0KCnJlcX'
+    'Vlc3RfaWQYBCABKA1SCXJlcXVlc3RJZBo9Cg9BdHRyaWJ1dGVzRW50cnkSEAoDa2V5GAEgASgJ'
+    'UgNrZXkSFAoFdmFsdWUYAiABKAlSBXZhbHVlOgI4AQ==');
 
 @$core.Deprecated('Use iCEServerDescriptor instead')
 const ICEServer$json = {
@@ -1428,3 +1460,39 @@ const SubscriptionResponse$json = {
 final $typed_data.Uint8List subscriptionResponseDescriptor = $convert.base64Decode(
     'ChRTdWJzY3JpcHRpb25SZXNwb25zZRIbCgl0cmFja19zaWQYASABKAlSCHRyYWNrU2lkEiwKA2'
     'VychgCIAEoDjIaLmxpdmVraXQuU3Vic2NyaXB0aW9uRXJyb3JSA2Vycg==');
+
+@$core.Deprecated('Use errorResponseDescriptor instead')
+const ErrorResponse$json = {
+  '1': 'ErrorResponse',
+  '2': [
+    {'1': 'request_id', '3': 1, '4': 1, '5': 13, '10': 'requestId'},
+    {
+      '1': 'reason',
+      '3': 2,
+      '4': 1,
+      '5': 14,
+      '6': '.livekit.ErrorResponse.Reason',
+      '10': 'reason'
+    },
+    {'1': 'message', '3': 3, '4': 1, '5': 9, '10': 'message'},
+  ],
+  '4': [ErrorResponse_Reason$json],
+};
+
+@$core.Deprecated('Use errorResponseDescriptor instead')
+const ErrorResponse_Reason$json = {
+  '1': 'Reason',
+  '2': [
+    {'1': 'UNKNOWN', '2': 0},
+    {'1': 'NOT_FOUND', '2': 1},
+    {'1': 'NOT_ALLOWED', '2': 2},
+    {'1': 'INVALID_ARGUMENT', '2': 3},
+  ],
+};
+
+/// Descriptor for `ErrorResponse`. Decode as a `google.protobuf.DescriptorProto`.
+final $typed_data.Uint8List errorResponseDescriptor = $convert.base64Decode(
+    'Cg1FcnJvclJlc3BvbnNlEh0KCnJlcXVlc3RfaWQYASABKA1SCXJlcXVlc3RJZBI1CgZyZWFzb2'
+    '4YAiABKA4yHS5saXZla2l0LkVycm9yUmVzcG9uc2UuUmVhc29uUgZyZWFzb24SGAoHbWVzc2Fn'
+    'ZRgDIAEoCVIHbWVzc2FnZSJLCgZSZWFzb24SCwoHVU5LTk9XThAAEg0KCU5PVF9GT1VORBABEg'
+    '8KC05PVF9BTExPV0VEEAISFAoQSU5WQUxJRF9BUkdVTUVOVBAD');
diff --git a/lib/src/types/participant_permissions.dart b/lib/src/types/participant_permissions.dart
index 07c4ac0c..36d6ce41 100644
--- a/lib/src/types/participant_permissions.dart
+++ b/lib/src/types/participant_permissions.dart
@@ -14,6 +14,7 @@
 
 import 'package:meta/meta.dart';
 
+import 'package:livekit_client/src/proto/livekit_models.pbenum.dart';
 import '../proto/livekit_models.pb.dart' as lk_models;
 
 @immutable
@@ -22,14 +23,16 @@ class ParticipantPermissions {
   final bool canPublish;
   final bool canPublishData;
   final bool hidden;
-  final bool recorder;
+  final bool canUpdateMetadata;
+  final List<TrackSource> canPublishSources;
 
   const ParticipantPermissions({
     this.canSubscribe = false,
     this.canPublish = false,
     this.canPublishData = false,
     this.hidden = false,
-    this.recorder = false,
+    this.canUpdateMetadata = false,
+    this.canPublishSources = const [],
   });
 }
 
@@ -39,6 +42,7 @@ extension ParticipantPermissionExt on lk_models.ParticipantPermission {
         canPublish: canPublish,
         canPublishData: canPublishData,
         hidden: hidden,
-        recorder: recorder,
+        canUpdateMetadata: canUpdateMetadata,
+        canPublishSources: canPublishSources,
       );
 }
diff --git a/lib/src/utils.dart b/lib/src/utils.dart
index 30378358..af1613a1 100644
--- a/lib/src/utils.dart
+++ b/lib/src/utils.dart
@@ -653,3 +653,41 @@ String? buildStreamId(PublishOptions options, TrackSource source) {
   }
   return streamId;
 }
+
+/// Compares two maps and returns the differences between them.
+/// [left] a map to compare.
+/// [right] a map to compare.
+Map mapDiff(Map left, Map right) {
+  final rightCopy = Map.of(right);
+  final diff = {};
+
+  left.forEach((leftKey, leftValue) {
+    if (!right.containsKey(leftKey)) {
+      diff[leftKey] = leftValue;
+      return;
+    }
+
+    final rightValue = right[leftKey];
+
+    switch ((leftValue, rightValue)) {
+      case (Map(), Map()):
+        diff[leftKey] = mapDiff(leftValue, rightValue);
+        break;
+      case (List(), List()):
+        if (!const DeepCollectionEquality().equals(leftValue, rightValue)) {
+          diff[leftKey] = rightValue;
+        }
+        break;
+      case (_, _):
+        if (leftValue != rightValue) {
+          diff[leftKey] = rightValue;
+        }
+        break;
+    }
+
+    rightCopy.remove(leftKey);
+  });
+
+  return {...diff, ...rightCopy}
+    ..removeWhere((key, value) => (value is Map && value.isEmpty));
+}