diff --git a/td/generate/scheme/telegram_api.tl b/td/generate/scheme/telegram_api.tl
index 762ff1d9e..d37b95efc 100644
--- a/td/generate/scheme/telegram_api.tl
+++ b/td/generate/scheme/telegram_api.tl
@@ -357,8 +357,8 @@ updateChat#1330a196 chat_id:int = Update;
 updateGroupCallParticipants#f2ebdb4e call:InputGroupCall participants:Vector<GroupCallParticipant> version:int = Update;
 updateGroupCall#a45eb99b chat_id:int call:GroupCall = Update;
 updatePeerHistoryTTL#bb9bb9a5 flags:# peer:Peer ttl_period:flags.0?int = Update;
-updateChatParticipant#439b2b39 flags:# chat_id:int date:int user_id:int prev_participant:flags.0?ChatParticipant new_participant:flags.1?ChatParticipant invite:flags.2?ExportedChatInvite qts:int = Update;
-updateChannelParticipant#961adf2 flags:# channel_id:int date:int user_id:int prev_participant:flags.0?ChannelParticipant new_participant:flags.1?ChannelParticipant invite:flags.2?ExportedChatInvite qts:int = Update;
+updateChatParticipant#f3b3781f flags:# chat_id:int date:int actor_id:int user_id:int prev_participant:flags.0?ChatParticipant new_participant:flags.1?ChatParticipant invite:flags.2?ExportedChatInvite qts:int = Update;
+updateChannelParticipant#7fecb1ec flags:# channel_id:int date:int actor_id:int user_id:int prev_participant:flags.0?ChannelParticipant new_participant:flags.1?ChannelParticipant invite:flags.2?ExportedChatInvite qts:int = Update;
 updateBotStopped#7f9488a user_id:int date:int stopped:Bool qts:int = Update;
 
 updates.state#a56c2a3e pts:int qts:int date:int seq:int unread_count:int = updates.State;
diff --git a/td/generate/scheme/telegram_api.tlo b/td/generate/scheme/telegram_api.tlo
index f9bb1d3b8..4c7daf5e9 100644
Binary files a/td/generate/scheme/telegram_api.tlo and b/td/generate/scheme/telegram_api.tlo differ
diff --git a/td/telegram/UpdatesManager.cpp b/td/telegram/UpdatesManager.cpp
index b6f9ba463..8a7d6c2fe 100644
--- a/td/telegram/UpdatesManager.cpp
+++ b/td/telegram/UpdatesManager.cpp
@@ -1978,7 +1978,7 @@ void UpdatesManager::process_qts_update(tl_object_ptr<telegram_api::Update> &&up
     }
     case telegram_api::updateChatParticipant::ID: {
       auto update = move_tl_object_as<telegram_api::updateChatParticipant>(update_ptr);
-      td_->contacts_manager_->on_update_chat_participant(ChatId(update->chat_id_), UserId(update->user_id_),
+      td_->contacts_manager_->on_update_chat_participant(ChatId(update->chat_id_), UserId(update->actor_id_),
                                                          update->date_, DialogInviteLink(std::move(update->invite_)),
                                                          std::move(update->prev_participant_),
                                                          std::move(update->new_participant_));
@@ -1987,7 +1987,7 @@ void UpdatesManager::process_qts_update(tl_object_ptr<telegram_api::Update> &&up
     }
     case telegram_api::updateChannelParticipant::ID: {
       auto update = move_tl_object_as<telegram_api::updateChannelParticipant>(update_ptr);
-      td_->contacts_manager_->on_update_channel_participant(ChannelId(update->channel_id_), UserId(update->user_id_),
+      td_->contacts_manager_->on_update_channel_participant(ChannelId(update->channel_id_), UserId(update->actor_id_),
                                                             update->date_, DialogInviteLink(std::move(update->invite_)),
                                                             std::move(update->prev_participant_),
                                                             std::move(update->new_participant_));