diff --git a/td/generate/scheme/telegram_api.tl b/td/generate/scheme/telegram_api.tl
index 5f158e89f..2abe99df1 100644
--- a/td/generate/scheme/telegram_api.tl
+++ b/td/generate/scheme/telegram_api.tl
@@ -101,7 +101,7 @@ storage.fileMp4#b3cea0e4 = storage.FileType;
 storage.fileWebp#1081464c = storage.FileType;
 
 userEmpty#d3bc4b7a id:long = User;
-user#5d99adee flags:# self:flags.10?true contact:flags.11?true mutual_contact:flags.12?true deleted:flags.13?true bot:flags.14?true bot_chat_history:flags.15?true bot_nochats:flags.16?true verified:flags.17?true restricted:flags.18?true min:flags.20?true bot_inline_geo:flags.21?true support:flags.23?true scam:flags.24?true apply_min_photo:flags.25?true fake:flags.26?true bot_attach_menu:flags.27?true premium:flags.28?true attach_menu_enabled:flags.29?true id:long access_hash:flags.0?long first_name:flags.1?string last_name:flags.2?string username:flags.3?string phone:flags.4?string photo:flags.5?UserProfilePhoto status:flags.6?UserStatus bot_info_version:flags.14?int restriction_reason:flags.18?Vector<RestrictionReason> bot_inline_placeholder:flags.19?string lang_code:flags.22?string emoji_status:flags.30?EmojiStatus = User;
+user#8f97c628 flags:# self:flags.10?true contact:flags.11?true mutual_contact:flags.12?true deleted:flags.13?true bot:flags.14?true bot_chat_history:flags.15?true bot_nochats:flags.16?true verified:flags.17?true restricted:flags.18?true min:flags.20?true bot_inline_geo:flags.21?true support:flags.23?true scam:flags.24?true apply_min_photo:flags.25?true fake:flags.26?true bot_attach_menu:flags.27?true premium:flags.28?true attach_menu_enabled:flags.29?true flags2:# id:long access_hash:flags.0?long first_name:flags.1?string last_name:flags.2?string username:flags.3?string phone:flags.4?string photo:flags.5?UserProfilePhoto status:flags.6?UserStatus bot_info_version:flags.14?int restriction_reason:flags.18?Vector<RestrictionReason> bot_inline_placeholder:flags.19?string lang_code:flags.22?string emoji_status:flags.30?EmojiStatus usernames:flags2.0?Vector<Username> = User;
 
 userProfilePhotoEmpty#4f11bae1 = UserProfilePhoto;
 userProfilePhoto#82d1f706 flags:# has_video:flags.0?true photo_id:long stripped_thumb:flags.1?bytes dc_id:int = UserProfilePhoto;
@@ -116,7 +116,7 @@ userStatusLastMonth#77ebc742 = UserStatus;
 chatEmpty#29562865 id:long = Chat;
 chat#41cbf256 flags:# creator:flags.0?true left:flags.2?true deactivated:flags.5?true call_active:flags.23?true call_not_empty:flags.24?true noforwards:flags.25?true id:long title:string photo:ChatPhoto participants_count:int date:int version:int migrated_to:flags.6?InputChannel admin_rights:flags.14?ChatAdminRights default_banned_rights:flags.18?ChatBannedRights = Chat;
 chatForbidden#6592a1a7 id:long title:string = Chat;
-channel#8261ac61 flags:# creator:flags.0?true left:flags.2?true broadcast:flags.5?true verified:flags.7?true megagroup:flags.8?true restricted:flags.9?true signatures:flags.11?true min:flags.12?true scam:flags.19?true has_link:flags.20?true has_geo:flags.21?true slowmode_enabled:flags.22?true call_active:flags.23?true call_not_empty:flags.24?true fake:flags.25?true gigagroup:flags.26?true noforwards:flags.27?true join_to_send:flags.28?true join_request:flags.29?true id:long access_hash:flags.13?long title:string username:flags.6?string photo:ChatPhoto date:int restriction_reason:flags.9?Vector<RestrictionReason> admin_rights:flags.14?ChatAdminRights banned_rights:flags.15?ChatBannedRights default_banned_rights:flags.18?ChatBannedRights participants_count:flags.17?int = Chat;
+channel#83259464 flags:# creator:flags.0?true left:flags.2?true broadcast:flags.5?true verified:flags.7?true megagroup:flags.8?true restricted:flags.9?true signatures:flags.11?true min:flags.12?true scam:flags.19?true has_link:flags.20?true has_geo:flags.21?true slowmode_enabled:flags.22?true call_active:flags.23?true call_not_empty:flags.24?true fake:flags.25?true gigagroup:flags.26?true noforwards:flags.27?true join_to_send:flags.28?true join_request:flags.29?true forum:flags.30?true flags2:# id:long access_hash:flags.13?long title:string username:flags.6?string photo:ChatPhoto date:int restriction_reason:flags.9?Vector<RestrictionReason> admin_rights:flags.14?ChatAdminRights banned_rights:flags.15?ChatBannedRights default_banned_rights:flags.18?ChatBannedRights participants_count:flags.17?int usernames:flags2.0?Vector<Username> = Chat;
 channelForbidden#17d493d5 flags:# broadcast:flags.5?true megagroup:flags.8?true id:long access_hash:long title:string until_date:flags.16?int = Chat;
 
 chatFull#c9d31138 flags:# can_set_username:flags.7?true has_scheduled:flags.8?true id:long about:string participants:ChatParticipants chat_photo:flags.2?Photo notify_settings:PeerNotifySettings exported_invite:flags.13?ExportedChatInvite bot_info:flags.3?Vector<BotInfo> pinned_msg_id:flags.6?int folder_id:flags.11?int call:flags.12?InputGroupCall ttl_period:flags.14?int groupcall_default_join_as:flags.15?Peer theme_emoticon:flags.16?string requests_pending:flags.17?int recent_requesters:flags.17?Vector<long> available_reactions:flags.18?ChatReactions = ChatFull;
@@ -183,6 +183,8 @@ messageActionChatJoinedByRequest#ebbca3cb = MessageAction;
 messageActionWebViewDataSentMe#47dd8079 text:string data:string = MessageAction;
 messageActionWebViewDataSent#b4c38cb5 text:string = MessageAction;
 messageActionGiftPremium#aba0f5c6 currency:string amount:long months:int = MessageAction;
+messageActionTopicCreate#d999256 flags:# title:string icon_color:int icon_emoji_id:flags.0?long = MessageAction;
+messageActionTopicEdit#b18a431c flags:# title:flags.0?string icon_emoji_id:flags.1?long closed:flags.2?Bool = MessageAction;
 
 dialog#a8edd0f5 flags:# pinned:flags.2?true unread_mark:flags.3?true peer:Peer top_message:int read_inbox_max_id:int read_outbox_max_id:int unread_count:int unread_mentions_count:int unread_reactions_count:int notify_settings:PeerNotifySettings pts:flags.0?int draft:flags.1?DraftMessage folder_id:flags.4?int = Dialog;
 dialogFolder#71bd134c flags:# pinned:flags.2?true folder:Folder peer:Peer top_message:int unread_muted_peers_count:int unread_unmuted_peers_count:int unread_muted_messages_count:int unread_unmuted_messages_count:int = Dialog;
@@ -211,6 +213,7 @@ inputNotifyPeer#b8bc5b0c peer:InputPeer = InputNotifyPeer;
 inputNotifyUsers#193b4417 = InputNotifyPeer;
 inputNotifyChats#4a95e84e = InputNotifyPeer;
 inputNotifyBroadcasts#b1db7c7e = InputNotifyPeer;
+inputNotifyForumTopic#5c467992 peer:InputPeer top_msg_id:int = InputNotifyPeer;
 
 inputPeerNotifySettings#df1f002b flags:# show_previews:flags.0?Bool silent:flags.1?Bool mute_until:flags.2?int sound:flags.3?NotificationSound = InputPeerNotifySettings;
 
@@ -289,7 +292,7 @@ updateUserTyping#c01e857f user_id:long action:SendMessageAction = Update;
 updateChatUserTyping#83487af0 chat_id:long from_id:Peer action:SendMessageAction = Update;
 updateChatParticipants#7761198 participants:ChatParticipants = Update;
 updateUserStatus#e5bdf8de user_id:long status:UserStatus = Update;
-updateUserName#c3f202e0 user_id:long first_name:string last_name:string username:string = Update;
+updateUserName#a7848924 user_id:long first_name:string last_name:string usernames:Vector<Username> = Update;
 updateUserPhoto#f227868c user_id:long date:int photo:UserProfilePhoto previous:Bool = Update;
 updateNewEncryptedMessage#12bcbd9a message:EncryptedMessage qts:int = Update;
 updateEncryptedChatTyping#1710f156 chat_id:int = Update;
@@ -324,7 +327,7 @@ updateBotCallbackQuery#b9cfc48d flags:# query_id:long user_id:long peer:Peer msg
 updateEditMessage#e40370a3 message:Message pts:int pts_count:int = Update;
 updateInlineBotCallbackQuery#691e9052 flags:# query_id:long user_id:long msg_id:InputBotInlineMessageID chat_instance:long data:flags.0?bytes game_short_name:flags.1?string = Update;
 updateReadChannelOutbox#b75f99a9 channel_id:long max_id:int = Update;
-updateDraftMessage#ee2bb969 peer:Peer draft:DraftMessage = Update;
+updateDraftMessage#1b49ec6d flags:# peer:Peer top_msg_id:flags.0?int draft:DraftMessage = Update;
 updateReadFeaturedStickers#571d2742 = Update;
 updateRecentStickers#9a422c20 = Update;
 updateConfig#a229dd06 = Update;
@@ -340,7 +343,7 @@ updatePhoneCall#ab0f6b1e phone_call:PhoneCall = Update;
 updateLangPackTooLong#46560264 lang_code:string = Update;
 updateLangPack#56022f4d difference:LangPackDifference = Update;
 updateFavedStickers#e511996d = Update;
-updateChannelReadMessagesContents#44bdd535 channel_id:long messages:Vector<int> = Update;
+updateChannelReadMessagesContents#ea29055d flags:# channel_id:long top_msg_id:flags.0?int messages:Vector<int> = Update;
 updateContactsReset#7084a7be = Update;
 updateChannelAvailableMessages#b23fc698 channel_id:long available_min_id:int = Update;
 updateDialogUnreadMark#e16459c3 flags:# unread:flags.0?true peer:DialogPeer = Update;
@@ -377,7 +380,7 @@ updateGroupCallConnection#b783982 flags:# presentation:flags.0?true params:DataJ
 updateBotCommands#4d712f2e peer:Peer bot_id:long commands:Vector<BotCommand> = Update;
 updatePendingJoinRequests#7063c3db peer:Peer requests_pending:int recent_requesters:Vector<long> = Update;
 updateBotChatInviteRequester#11dfa986 peer:Peer date:int user_id:long about:string invite:ExportedChatInvite qts:int = Update;
-updateMessageReactions#154798c3 peer:Peer msg_id:int reactions:MessageReactions = Update;
+updateMessageReactions#5e1b3cb8 flags:# peer:Peer msg_id:int top_msg_id:flags.0?int reactions:MessageReactions = Update;
 updateAttachMenuBots#17b7a20b = Update;
 updateWebViewResultSent#1592b79d query_id:long = Update;
 updateBotMenuButton#14b85813 bot_id:long button:BotMenuButton = Update;
@@ -389,6 +392,7 @@ updateRecentEmojiStatuses#30f443db = Update;
 updateRecentReactions#6f7863f4 = Update;
 updateMoveStickerSetToTop#86fccf85 flags:# masks:flags.0?true emojis:flags.1?true stickerset:long = Update;
 updateMessageExtendedMedia#5a73a98c peer:Peer msg_id:int extended_media:MessageExtendedMedia = Update;
+updateChannelPinnedTopic#f694b0ae flags:# channel_id:long topic_id:flags.0?int = Update;
 
 updates.state#a56c2a3e pts:int qts:int date:int seq:int unread_count:int = updates.State;
 
@@ -461,6 +465,7 @@ notifyPeer#9fd40bd8 peer:Peer = NotifyPeer;
 notifyUsers#b4c83b4c = NotifyPeer;
 notifyChats#c007cec3 = NotifyPeer;
 notifyBroadcasts#d612e8ef = NotifyPeer;
+notifyForumTopic#226e6308 peer:Peer top_msg_id:int = NotifyPeer;
 
 sendMessageTypingAction#16bf744e = SendMessageAction;
 sendMessageCancelAction#fd5ec8f5 = SendMessageAction;
@@ -579,6 +584,7 @@ inputStickerSetAnimatedEmojiAnimations#cde3739 = InputStickerSet;
 inputStickerSetPremiumGifts#c88b3b02 = InputStickerSet;
 inputStickerSetEmojiGenericAnimations#4c4d4ce = InputStickerSet;
 inputStickerSetEmojiDefaultStatuses#29d0f5ee = InputStickerSet;
+inputStickerSetEmojiDefaultTopicIcons#44c1f8e9 = InputStickerSet;
 
 stickerSet#2dd14edc flags:# archived:flags.1?true official:flags.2?true masks:flags.3?true animated:flags.5?true videos:flags.6?true emojis:flags.7?true installed_date:flags.0?int id:long access_hash:long title:string short_name:string thumbs:flags.4?Vector<PhotoSize> thumb_dc_id:flags.4?int thumb_version:flags.4?int thumb_document_id:flags.8?long count:int hash:int = StickerSet;
 
@@ -943,12 +949,18 @@ channelAdminLogEventActionParticipantJoinByRequest#afb6144a invite:ExportedChatI
 channelAdminLogEventActionToggleNoForwards#cb2ac766 new_value:Bool = ChannelAdminLogEventAction;
 channelAdminLogEventActionSendMessage#278f2868 message:Message = ChannelAdminLogEventAction;
 channelAdminLogEventActionChangeAvailableReactions#be4e0ef8 prev_value:ChatReactions new_value:ChatReactions = ChannelAdminLogEventAction;
+channelAdminLogEventActionChangeUsernames#f04fb3a9 prev_value:Vector<string> new_value:Vector<string> = ChannelAdminLogEventAction;
+channelAdminLogEventActionToggleForum#2cc6383 new_value:Bool = ChannelAdminLogEventAction;
+channelAdminLogEventActionCreateTopic#58707d28 topic:ForumTopic = ChannelAdminLogEventAction;
+channelAdminLogEventActionEditTopic#f06fe208 prev_topic:ForumTopic new_topic:ForumTopic = ChannelAdminLogEventAction;
+channelAdminLogEventActionDeleteTopic#ae168909 topic:ForumTopic = ChannelAdminLogEventAction;
+channelAdminLogEventActionPinTopic#5d8d353b flags:# prev_topic:flags.0?ForumTopic new_topic:flags.1?ForumTopic = ChannelAdminLogEventAction;
 
 channelAdminLogEvent#1fad68cd id:long date:int user_id:long action:ChannelAdminLogEventAction = ChannelAdminLogEvent;
 
 channels.adminLogResults#ed8af74d events:Vector<ChannelAdminLogEvent> chats:Vector<Chat> users:Vector<User> = channels.AdminLogResults;
 
-channelAdminLogEventsFilter#ea107ae4 flags:# join:flags.0?true leave:flags.1?true invite:flags.2?true ban:flags.3?true unban:flags.4?true kick:flags.5?true unkick:flags.6?true promote:flags.7?true demote:flags.8?true info:flags.9?true settings:flags.10?true pinned:flags.11?true edit:flags.12?true delete:flags.13?true group_call:flags.14?true invites:flags.15?true send:flags.16?true = ChannelAdminLogEventsFilter;
+channelAdminLogEventsFilter#ea107ae4 flags:# join:flags.0?true leave:flags.1?true invite:flags.2?true ban:flags.3?true unban:flags.4?true kick:flags.5?true unkick:flags.6?true promote:flags.7?true demote:flags.8?true info:flags.9?true settings:flags.10?true pinned:flags.11?true edit:flags.12?true delete:flags.13?true group_call:flags.14?true invites:flags.15?true send:flags.16?true forums:flags.17?true = ChannelAdminLogEventsFilter;
 
 popularContact#5ce14175 client_id:long importers:int = PopularContact;
 
@@ -1106,9 +1118,9 @@ chatOnlines#f041e250 onlines:int = ChatOnlines;
 
 statsURL#47a971e0 url:string = StatsURL;
 
-chatAdminRights#5fb224d5 flags:# change_info:flags.0?true post_messages:flags.1?true edit_messages:flags.2?true delete_messages:flags.3?true ban_users:flags.4?true invite_users:flags.5?true pin_messages:flags.7?true add_admins:flags.9?true anonymous:flags.10?true manage_call:flags.11?true other:flags.12?true = ChatAdminRights;
+chatAdminRights#5fb224d5 flags:# change_info:flags.0?true post_messages:flags.1?true edit_messages:flags.2?true delete_messages:flags.3?true ban_users:flags.4?true invite_users:flags.5?true pin_messages:flags.7?true add_admins:flags.9?true anonymous:flags.10?true manage_call:flags.11?true other:flags.12?true manage_topics:flags.13?true = ChatAdminRights;
 
-chatBannedRights#9f120418 flags:# view_messages:flags.0?true send_messages:flags.1?true send_media:flags.2?true send_stickers:flags.3?true send_gifs:flags.4?true send_games:flags.5?true send_inline:flags.6?true embed_links:flags.7?true send_polls:flags.8?true change_info:flags.10?true invite_users:flags.15?true pin_messages:flags.17?true until_date:int = ChatBannedRights;
+chatBannedRights#9f120418 flags:# view_messages:flags.0?true send_messages:flags.1?true send_media:flags.2?true send_stickers:flags.3?true send_gifs:flags.4?true send_games:flags.5?true send_inline:flags.6?true embed_links:flags.7?true send_polls:flags.8?true change_info:flags.10?true invite_users:flags.15?true pin_messages:flags.17?true manage_topics:flags.18?true until_date:int = ChatBannedRights;
 
 inputWallPaper#e630b979 id:long access_hash:long = InputWallPaper;
 inputWallPaperSlug#72091c80 slug:string = InputWallPaper;
@@ -1239,7 +1251,7 @@ messages.messageViews#b6c4f543 views:Vector<MessageViews> chats:Vector<Chat> use
 
 messages.discussionMessage#a6341782 flags:# messages:Vector<Message> max_id:flags.0?int read_inbox_max_id:flags.1?int read_outbox_max_id:flags.2?int unread_count:int chats:Vector<Chat> users:Vector<User> = messages.DiscussionMessage;
 
-messageReplyHeader#a6d57763 flags:# reply_to_scheduled:flags.2?true reply_to_msg_id:int reply_to_peer_id:flags.0?Peer reply_to_top_id:flags.1?int = MessageReplyHeader;
+messageReplyHeader#a6d57763 flags:# reply_to_scheduled:flags.2?true forum_topic:flags.3?true reply_to_msg_id:int reply_to_peer_id:flags.0?Peer reply_to_top_id:flags.1?int = MessageReplyHeader;
 
 messageReplies#83d60fc2 flags:# comments:flags.0?true replies:int replies_pts:int recent_repliers:flags.1?Vector<Peer> channel_id:flags.0?long max_id:flags.2?int read_max_id:flags.3?int = MessageReplies;
 
@@ -1307,9 +1319,10 @@ account.resetPasswordFailedWait#e3779861 retry_date:int = account.ResetPasswordR
 account.resetPasswordRequestedWait#e9effc7d until_date:int = account.ResetPasswordResult;
 account.resetPasswordOk#e926d63e = account.ResetPasswordResult;
 
-sponsoredMessage#3a836df8 flags:# recommended:flags.5?true random_id:bytes from_id:flags.3?Peer chat_invite:flags.4?ChatInvite chat_invite_hash:flags.4?string channel_post:flags.2?int start_param:flags.0?string message:string entities:flags.1?Vector<MessageEntity> = SponsoredMessage;
+sponsoredMessage#3a836df8 flags:# recommended:flags.5?true show_peer_photo:flags.6?true random_id:bytes from_id:flags.3?Peer chat_invite:flags.4?ChatInvite chat_invite_hash:flags.4?string channel_post:flags.2?int start_param:flags.0?string message:string entities:flags.1?Vector<MessageEntity> = SponsoredMessage;
 
-messages.sponsoredMessages#65a4c7d5 messages:Vector<SponsoredMessage> chats:Vector<Chat> users:Vector<User> = messages.SponsoredMessages;
+messages.sponsoredMessages#c9ee1d87 flags:# posts_between:flags.0?int messages:Vector<SponsoredMessage> chats:Vector<Chat> users:Vector<User> = messages.SponsoredMessages;
+messages.sponsoredMessagesEmpty#1839490f = messages.SponsoredMessages;
 
 searchResultsCalendarPeriod#c9b0539f date:int min_msg_id:int max_msg_id:int count:int = SearchResultsCalendarPeriod;
 
@@ -1441,6 +1454,13 @@ messageExtendedMedia#ee479c64 media:MessageMedia = MessageExtendedMedia;
 
 stickerKeyword#fcfeb29c document_id:long keyword:Vector<string> = StickerKeyword;
 
+username#b4073647 flags:# editable:flags.0?true active:flags.1?true username:string = Username;
+
+forumTopicDeleted#23f109b id:int = ForumTopic;
+forumTopic#71701da9 flags:# my:flags.1?true closed:flags.2?true pinned:flags.3?true id:int date:int title:string icon_color:int icon_emoji_id:flags.0?long top_message:int read_inbox_max_id:int read_outbox_max_id:int unread_count:int unread_mentions_count:int unread_reactions_count:int from_id:Peer notify_settings:PeerNotifySettings draft:flags.4?DraftMessage = ForumTopic;
+
+messages.forumTopics#367617d3 flags:# order_by_create_date:flags.0?true count:int topics:Vector<ForumTopic> messages:Vector<Message> chats:Vector<Chat> users:Vector<User> pts:int = messages.ForumTopics;
+
 ---functions---
 
 invokeAfterMsg#cb9f372d {X:Type} msg_id:long query:!X = X;
@@ -1531,7 +1551,7 @@ account.createTheme#652e4400 flags:# slug:string title:string document:flags.2?I
 account.updateTheme#2bf40ccc flags:# format:string theme:InputTheme slug:flags.0?string title:flags.1?string document:flags.2?InputDocument settings:flags.3?Vector<InputThemeSettings> = Theme;
 account.saveTheme#f257106c theme:InputTheme unsave:Bool = Bool;
 account.installTheme#c727bb3b flags:# dark:flags.0?true theme:flags.1?InputTheme format:flags.2?string base_theme:flags.3?BaseTheme = Bool;
-account.getTheme#8d9d742b format:string theme:InputTheme document_id:long = Theme;
+account.getTheme#3a5869ec format:string theme:InputTheme = Theme;
 account.getThemes#7206e458 format:string hash:long = account.Themes;
 account.setContentSettings#b574b16b flags:# sensitive_enabled:flags.0?true = Bool;
 account.getContentSettings#8b9b4dae = account.ContentSettings;
@@ -1551,6 +1571,8 @@ account.updateEmojiStatus#fbd3de6b emoji_status:EmojiStatus = Bool;
 account.getDefaultEmojiStatuses#d6753386 hash:long = account.EmojiStatuses;
 account.getRecentEmojiStatuses#f578105 hash:long = account.EmojiStatuses;
 account.clearRecentEmojiStatuses#18201aae = Bool;
+account.reorderUsernames#ef500eab order:Vector<string> = Bool;
+account.toggleUsername#58d6b376 username:string active:Bool = Bool;
 
 users.getUsers#d91a548 id:Vector<InputUser> = Vector<User>;
 users.getFullUser#b60f5918 id:InputUser = users.UserFull;
@@ -1587,9 +1609,9 @@ messages.deleteHistory#b08f922a flags:# just_clear:flags.0?true revoke:flags.1?t
 messages.deleteMessages#e58e95d2 flags:# revoke:flags.0?true id:Vector<int> = messages.AffectedMessages;
 messages.receivedMessages#5a954c0 max_id:int = Vector<ReceivedNotifyMessage>;
 messages.setTyping#58943ee2 flags:# peer:InputPeer top_msg_id:flags.0?int action:SendMessageAction = Bool;
-messages.sendMessage#d9d75a4 flags:# no_webpage:flags.1?true silent:flags.5?true background:flags.6?true clear_draft:flags.7?true noforwards:flags.14?true update_stickersets_order:flags.15?true peer:InputPeer reply_to_msg_id:flags.0?int message:string random_id:long reply_markup:flags.2?ReplyMarkup entities:flags.3?Vector<MessageEntity> schedule_date:flags.10?int send_as:flags.13?InputPeer = Updates;
-messages.sendMedia#e25ff8e0 flags:# silent:flags.5?true background:flags.6?true clear_draft:flags.7?true noforwards:flags.14?true update_stickersets_order:flags.15?true peer:InputPeer reply_to_msg_id:flags.0?int media:InputMedia message:string random_id:long reply_markup:flags.2?ReplyMarkup entities:flags.3?Vector<MessageEntity> schedule_date:flags.10?int send_as:flags.13?InputPeer = Updates;
-messages.forwardMessages#cc30290b flags:# silent:flags.5?true background:flags.6?true with_my_score:flags.8?true drop_author:flags.11?true drop_media_captions:flags.12?true noforwards:flags.14?true from_peer:InputPeer id:Vector<int> random_id:Vector<long> to_peer:InputPeer schedule_date:flags.10?int send_as:flags.13?InputPeer = Updates;
+messages.sendMessage#1cc20387 flags:# no_webpage:flags.1?true silent:flags.5?true background:flags.6?true clear_draft:flags.7?true noforwards:flags.14?true update_stickersets_order:flags.15?true peer:InputPeer reply_to_msg_id:flags.0?int top_msg_id:flags.9?int message:string random_id:long reply_markup:flags.2?ReplyMarkup entities:flags.3?Vector<MessageEntity> schedule_date:flags.10?int send_as:flags.13?InputPeer = Updates;
+messages.sendMedia#7547c966 flags:# silent:flags.5?true background:flags.6?true clear_draft:flags.7?true noforwards:flags.14?true update_stickersets_order:flags.15?true peer:InputPeer reply_to_msg_id:flags.0?int top_msg_id:flags.9?int media:InputMedia message:string random_id:long reply_markup:flags.2?ReplyMarkup entities:flags.3?Vector<MessageEntity> schedule_date:flags.10?int send_as:flags.13?InputPeer = Updates;
+messages.forwardMessages#c661bbc4 flags:# silent:flags.5?true background:flags.6?true with_my_score:flags.8?true drop_author:flags.11?true drop_media_captions:flags.12?true noforwards:flags.14?true from_peer:InputPeer id:Vector<int> random_id:Vector<long> to_peer:InputPeer top_msg_id:flags.9?int schedule_date:flags.10?int send_as:flags.13?InputPeer = Updates;
 messages.reportSpam#cf1592db peer:InputPeer = Bool;
 messages.getPeerSettings#efd9a6a2 peer:InputPeer = messages.PeerSettings;
 messages.report#8953ab4e peer:InputPeer id:Vector<int> reason:ReportReason message:string = Bool;
@@ -1632,14 +1654,14 @@ messages.getSavedGifs#5cf09635 hash:long = messages.SavedGifs;
 messages.saveGif#327a30cb id:InputDocument unsave:Bool = Bool;
 messages.getInlineBotResults#514e999d flags:# bot:InputUser peer:InputPeer geo_point:flags.0?InputGeoPoint query:string offset:string = messages.BotResults;
 messages.setInlineBotResults#eb5ea206 flags:# gallery:flags.0?true private:flags.1?true query_id:long results:Vector<InputBotInlineResult> cache_time:int next_offset:flags.2?string switch_pm:flags.3?InlineBotSwitchPM = Bool;
-messages.sendInlineBotResult#7aa11297 flags:# silent:flags.5?true background:flags.6?true clear_draft:flags.7?true hide_via:flags.11?true peer:InputPeer reply_to_msg_id:flags.0?int random_id:long query_id:long id:string schedule_date:flags.10?int send_as:flags.13?InputPeer = Updates;
+messages.sendInlineBotResult#d3fbdccb flags:# silent:flags.5?true background:flags.6?true clear_draft:flags.7?true hide_via:flags.11?true peer:InputPeer reply_to_msg_id:flags.0?int top_msg_id:flags.9?int random_id:long query_id:long id:string schedule_date:flags.10?int send_as:flags.13?InputPeer = Updates;
 messages.getMessageEditData#fda68d36 peer:InputPeer id:int = messages.MessageEditData;
 messages.editMessage#48f71778 flags:# no_webpage:flags.1?true peer:InputPeer id:int message:flags.11?string media:flags.14?InputMedia reply_markup:flags.2?ReplyMarkup entities:flags.3?Vector<MessageEntity> schedule_date:flags.15?int = Updates;
 messages.editInlineBotMessage#83557dba flags:# no_webpage:flags.1?true id:InputBotInlineMessageID message:flags.11?string media:flags.14?InputMedia reply_markup:flags.2?ReplyMarkup entities:flags.3?Vector<MessageEntity> = Bool;
 messages.getBotCallbackAnswer#9342ca07 flags:# game:flags.1?true peer:InputPeer msg_id:int data:flags.0?bytes password:flags.2?InputCheckPasswordSRP = messages.BotCallbackAnswer;
 messages.setBotCallbackAnswer#d58f130a flags:# alert:flags.1?true query_id:long message:flags.0?string url:flags.2?string cache_time:int = Bool;
 messages.getPeerDialogs#e470bcfd peers:Vector<InputDialogPeer> = messages.PeerDialogs;
-messages.saveDraft#bc39e14b flags:# no_webpage:flags.1?true reply_to_msg_id:flags.0?int peer:InputPeer message:string entities:flags.3?Vector<MessageEntity> = Bool;
+messages.saveDraft#b4331e3f flags:# no_webpage:flags.1?true reply_to_msg_id:flags.0?int top_msg_id:flags.2?int peer:InputPeer message:string entities:flags.3?Vector<MessageEntity> = Bool;
 messages.getAllDrafts#6a3f8d65 = Updates;
 messages.getFeaturedStickers#64780b14 hash:long = messages.FeaturedStickers;
 messages.readFeaturedStickers#5b118126 id:Vector<long> = Bool;
@@ -1665,10 +1687,10 @@ messages.uploadMedia#519bc2b1 peer:InputPeer media:InputMedia = MessageMedia;
 messages.sendScreenshotNotification#c97df020 peer:InputPeer reply_to_msg_id:int random_id:long = Updates;
 messages.getFavedStickers#4f1aaa9 hash:long = messages.FavedStickers;
 messages.faveSticker#b9ffc55b id:InputDocument unfave:Bool = Bool;
-messages.getUnreadMentions#46578472 peer:InputPeer offset_id:int add_offset:int limit:int max_id:int min_id:int = messages.Messages;
-messages.readMentions#f0189d3 peer:InputPeer = messages.AffectedHistory;
+messages.getUnreadMentions#f107e790 flags:# peer:InputPeer top_msg_id:flags.0?int offset_id:int add_offset:int limit:int max_id:int min_id:int = messages.Messages;
+messages.readMentions#36e5bf4d flags:# peer:InputPeer top_msg_id:flags.0?int = messages.AffectedHistory;
 messages.getRecentLocations#702a40e0 peer:InputPeer limit:int hash:long = messages.Messages;
-messages.sendMultiMedia#f803138f flags:# silent:flags.5?true background:flags.6?true clear_draft:flags.7?true noforwards:flags.14?true update_stickersets_order:flags.15?true peer:InputPeer reply_to_msg_id:flags.0?int multi_media:Vector<InputSingleMedia> schedule_date:flags.10?int send_as:flags.13?InputPeer = Updates;
+messages.sendMultiMedia#b6f11a1c flags:# silent:flags.5?true background:flags.6?true clear_draft:flags.7?true noforwards:flags.14?true update_stickersets_order:flags.15?true peer:InputPeer reply_to_msg_id:flags.0?int top_msg_id:flags.9?int multi_media:Vector<InputSingleMedia> schedule_date:flags.10?int send_as:flags.13?InputPeer = Updates;
 messages.uploadEncryptedFile#5057c497 peer:InputEncryptedChat file:InputEncryptedFile = EncryptedFile;
 messages.searchStickerSets#35705b8a flags:# exclude_featured:flags.0?true q:string hash:long = messages.FoundStickerSets;
 messages.getSplitRanges#1cff7e08 = Vector<MessageRange>;
@@ -1685,7 +1707,7 @@ messages.getEmojiKeywords#35a0e062 lang_code:string = EmojiKeywordsDifference;
 messages.getEmojiKeywordsDifference#1508b6af lang_code:string from_version:int = EmojiKeywordsDifference;
 messages.getEmojiKeywordsLanguages#4e9963b2 lang_codes:Vector<string> = Vector<EmojiLanguage>;
 messages.getEmojiURL#d5b10c26 lang_code:string = EmojiURL;
-messages.getSearchCounters#732eef00 peer:InputPeer filters:Vector<MessagesFilter> = Vector<messages.SearchCounter>;
+messages.getSearchCounters#ae7cc1 flags:# peer:InputPeer top_msg_id:flags.0?int filters:Vector<MessagesFilter> = Vector<messages.SearchCounter>;
 messages.requestUrlAuth#198fb446 flags:# peer:flags.1?InputPeer msg_id:flags.1?int button_id:flags.1?int url:flags.2?string = UrlAuthResult;
 messages.acceptUrlAuth#b12c7125 flags:# write_allowed:flags.0?true peer:flags.1?InputPeer msg_id:flags.1?int button_id:flags.1?int url:flags.2?string = UrlAuthResult;
 messages.hidePeerSettingsBar#4facb138 peer:InputPeer = Bool;
@@ -1703,7 +1725,7 @@ messages.getOldFeaturedStickers#7ed094a1 offset:int limit:int hash:long = messag
 messages.getReplies#22ddd30c peer:InputPeer msg_id:int offset_id:int offset_date:int add_offset:int limit:int max_id:int min_id:int hash:long = messages.Messages;
 messages.getDiscussionMessage#446972fd peer:InputPeer msg_id:int = messages.DiscussionMessage;
 messages.readDiscussion#f731a9f4 peer:InputPeer msg_id:int read_max_id:int = Bool;
-messages.unpinAllMessages#f025bc8b peer:InputPeer = messages.AffectedHistory;
+messages.unpinAllMessages#ee22b9a8 flags:# peer:InputPeer top_msg_id:flags.0?int = messages.AffectedHistory;
 messages.deleteChat#5bd0ee50 chat_id:long = Bool;
 messages.deletePhoneCallHistory#f9cbe409 flags:# revoke:flags.0?true = messages.AffectedFoundMessages;
 messages.checkHistoryImport#43fe19f3 import_head:string = messages.HistoryImportParsed;
@@ -1734,14 +1756,14 @@ messages.setChatAvailableReactions#feb16771 peer:InputPeer available_reactions:C
 messages.getAvailableReactions#18dea0ac hash:int = messages.AvailableReactions;
 messages.setDefaultReaction#4f47a016 reaction:Reaction = Bool;
 messages.translateText#24ce6dee flags:# peer:flags.0?InputPeer msg_id:flags.0?int text:flags.1?string from_lang:flags.2?string to_lang:string = messages.TranslatedText;
-messages.getUnreadReactions#e85bae1a peer:InputPeer offset_id:int add_offset:int limit:int max_id:int min_id:int = messages.Messages;
-messages.readReactions#82e251d7 peer:InputPeer = messages.AffectedHistory;
+messages.getUnreadReactions#3223495b flags:# peer:InputPeer top_msg_id:flags.0?int offset_id:int add_offset:int limit:int max_id:int min_id:int = messages.Messages;
+messages.readReactions#54aa7f8e flags:# peer:InputPeer top_msg_id:flags.0?int = messages.AffectedHistory;
 messages.searchSentMedia#107e31a0 q:string filter:MessagesFilter limit:int = messages.Messages;
 messages.getAttachMenuBots#16fcc2cb hash:long = AttachMenuBots;
 messages.getAttachMenuBot#77216192 bot:InputUser = AttachMenuBotsBot;
 messages.toggleBotInAttachMenu#1aee33af bot:InputUser enabled:Bool = Bool;
-messages.requestWebView#fc87a53c flags:# from_bot_menu:flags.4?true silent:flags.5?true peer:InputPeer bot:InputUser url:flags.1?string start_param:flags.3?string theme_params:flags.2?DataJSON platform:string reply_to_msg_id:flags.0?int send_as:flags.13?InputPeer = WebViewResult;
-messages.prolongWebView#ea5fbcce flags:# silent:flags.5?true peer:InputPeer bot:InputUser query_id:long reply_to_msg_id:flags.0?int send_as:flags.13?InputPeer = Bool;
+messages.requestWebView#178b480b flags:# from_bot_menu:flags.4?true silent:flags.5?true peer:InputPeer bot:InputUser url:flags.1?string start_param:flags.3?string theme_params:flags.2?DataJSON platform:string reply_to_msg_id:flags.0?int top_msg_id:flags.9?int send_as:flags.13?InputPeer = WebViewResult;
+messages.prolongWebView#7ff34309 flags:# silent:flags.5?true peer:InputPeer bot:InputUser query_id:long reply_to_msg_id:flags.0?int top_msg_id:flags.9?int send_as:flags.13?InputPeer = Bool;
 messages.requestSimpleWebView#299bec8e flags:# bot:InputUser url:string theme_params:flags.0?DataJSON platform:string = SimpleWebViewResult;
 messages.sendWebViewResultMessage#a4314f5 bot_query_id:string result:InputBotInlineResult = WebViewMessageSent;
 messages.sendWebViewData#dc0242c8 bot:InputUser random_id:long button_text:string data:string = Updates;
@@ -1839,6 +1861,16 @@ channels.getSendAs#dc770ee peer:InputPeer = channels.SendAsPeers;
 channels.deleteParticipantHistory#367544db channel:InputChannel participant:InputPeer = messages.AffectedHistory;
 channels.toggleJoinToSend#e4cb9580 channel:InputChannel enabled:Bool = Updates;
 channels.toggleJoinRequest#4c2985b6 channel:InputChannel enabled:Bool = Updates;
+channels.reorderUsernames#b45ced1d channel:InputChannel order:Vector<string> = Bool;
+channels.toggleUsername#50f24105 channel:InputChannel username:string active:Bool = Bool;
+channels.deactivateAllUsernames#a245dd3 channel:InputChannel = Bool;
+channels.toggleForum#a4298b29 channel:InputChannel enabled:Bool = Updates;
+channels.createForumTopic#f40c0224 flags:# channel:InputChannel title:string icon_color:flags.0?int icon_emoji_id:flags.3?long random_id:long send_as:flags.2?InputPeer = Updates;
+channels.getForumTopics#de560d1 flags:# channel:InputChannel q:flags.0?string offset_date:int offset_id:int offset_topic:int limit:int = messages.ForumTopics;
+channels.getForumTopicsByID#b0831eb9 channel:InputChannel topics:Vector<int> = messages.ForumTopics;
+channels.editForumTopic#6c883e2d flags:# channel:InputChannel topic_id:int title:flags.0?string icon_emoji_id:flags.1?long closed:flags.2?Bool = Updates;
+channels.updatePinnedForumTopic#6c2d9026 channel:InputChannel topic_id:int pinned:Bool = Updates;
+channels.deleteTopicHistory#34435f2d channel:InputChannel top_msg_id:int = messages.AffectedHistory;
 
 bots.sendCustomRequest#aa2769ed custom_method:string params:DataJSON = DataJSON;
 bots.answerWebhookJSONQuery#e6213f4d query_id:long data:DataJSON = Bool;
diff --git a/td/telegram/AttachMenuManager.cpp b/td/telegram/AttachMenuManager.cpp
index c52ca42c5..cfdb087a1 100644
--- a/td/telegram/AttachMenuManager.cpp
+++ b/td/telegram/AttachMenuManager.cpp
@@ -104,7 +104,7 @@ class RequestWebViewQuery final : public Td::ResultHandler {
 
     send_query(G()->net_query_creator().create(telegram_api::messages_requestWebView(
         flags, false /*ignored*/, false /*ignored*/, std::move(input_peer), std::move(input_user), url, start_parameter,
-        std::move(theme_parameters), platform, reply_to_message_id.get_server_message_id().get(),
+        std::move(theme_parameters), platform, reply_to_message_id.get_server_message_id().get(), 0,
         std::move(as_input_peer))));
   }
 
@@ -163,7 +163,7 @@ class ProlongWebViewQuery final : public Td::ResultHandler {
 
     send_query(G()->net_query_creator().create(telegram_api::messages_prolongWebView(
         flags, false /*ignored*/, std::move(input_peer), r_input_user.move_as_ok(), query_id,
-        reply_to_message_id.get_server_message_id().get(), std::move(as_input_peer))));
+        reply_to_message_id.get_server_message_id().get(), 0, std::move(as_input_peer))));
   }
 
   void on_result(BufferSlice packet) final {
diff --git a/td/telegram/ContactsManager.cpp b/td/telegram/ContactsManager.cpp
index 04de07b1e..3a35e5917 100644
--- a/td/telegram/ContactsManager.cpp
+++ b/td/telegram/ContactsManager.cpp
@@ -9212,8 +9212,9 @@ ContactsManager::User *ContactsManager::get_user_force(UserId user_id) {
         flags, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/,
         false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/,
         false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/,
-        false /*ignored*/, false /*ignored*/, false /*ignored*/, user_id.get(), 1, first_name, string(), username,
-        phone_number, std::move(profile_photo), nullptr, bot_info_version, Auto(), string(), string(), nullptr);
+        false /*ignored*/, false /*ignored*/, false /*ignored*/, 0, user_id.get(), 1, first_name, string(), username,
+        phone_number, std::move(profile_photo), nullptr, bot_info_version, Auto(), string(), string(), nullptr,
+        vector<telegram_api::object_ptr<telegram_api::username>>());
     on_get_user(std::move(user), "get_user_force");
     u = get_user(user_id);
     CHECK(u != nullptr && u->is_received);
diff --git a/td/telegram/DialogEventLog.cpp b/td/telegram/DialogEventLog.cpp
index 235ac676e..359289b0e 100644
--- a/td/telegram/DialogEventLog.cpp
+++ b/td/telegram/DialogEventLog.cpp
@@ -127,6 +127,10 @@ static td_api::object_ptr<td_api::ChatEventAction> get_chat_event_action_object(
       return td_api::make_object<td_api::chatEventUsernameChanged>(std::move(action->prev_value_),
                                                                    std::move(action->new_value_));
     }
+    case telegram_api::channelAdminLogEventActionChangeUsernames::ID: {
+      auto action = move_tl_object_as<telegram_api::channelAdminLogEventActionChangeUsernames>(action_ptr);
+      return nullptr;
+    }
     case telegram_api::channelAdminLogEventActionChangePhoto::ID: {
       auto action = move_tl_object_as<telegram_api::channelAdminLogEventActionChangePhoto>(action_ptr);
       auto file_manager = td->file_manager_.get();
@@ -352,6 +356,12 @@ static td_api::object_ptr<td_api::ChatEventAction> get_chat_event_action_object(
           old_available_reactions.get_chat_available_reactions_object(),
           new_available_reactions.get_chat_available_reactions_object());
     }
+    case telegram_api::channelAdminLogEventActionToggleForum::ID:
+    case telegram_api::channelAdminLogEventActionCreateTopic::ID:
+    case telegram_api::channelAdminLogEventActionEditTopic::ID:
+    case telegram_api::channelAdminLogEventActionDeleteTopic::ID:
+    case telegram_api::channelAdminLogEventActionPinTopic::ID:
+      return nullptr;
     default:
       UNREACHABLE();
       return nullptr;
@@ -489,7 +499,8 @@ static telegram_api::object_ptr<telegram_api::channelAdminLogEventsFilter> get_i
   return telegram_api::make_object<telegram_api::channelAdminLogEventsFilter>(
       flags, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/,
       false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/,
-      false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/);
+      false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/,
+      false /*ignored*/);
 }
 
 void get_dialog_event_log(Td *td, DialogId dialog_id, const string &query, int64 from_event_id, int32 limit,
diff --git a/td/telegram/DialogParticipant.cpp b/td/telegram/DialogParticipant.cpp
index 8962e25cb..9ce68662c 100644
--- a/td/telegram/DialogParticipant.cpp
+++ b/td/telegram/DialogParticipant.cpp
@@ -119,7 +119,8 @@ telegram_api::object_ptr<telegram_api::chatAdminRights> AdministratorRights::get
 
   return telegram_api::make_object<telegram_api::chatAdminRights>(
       flags, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/,
-      false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/);
+      false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/,
+      false /*ignored*/);
 }
 
 td_api::object_ptr<td_api::chatAdministratorRights> AdministratorRights::get_chat_administrator_rights_object() const {
@@ -268,10 +269,10 @@ tl_object_ptr<telegram_api::chatBannedRights> RestrictedRights::get_chat_banned_
   }
 
   LOG(INFO) << "Create chat banned rights " << flags;
-  return make_tl_object<telegram_api::chatBannedRights>(flags, false /*ignored*/, false /*ignored*/, false /*ignored*/,
-                                                        false /*ignored*/, false /*ignored*/, false /*ignored*/,
-                                                        false /*ignored*/, false /*ignored*/, false /*ignored*/,
-                                                        false /*ignored*/, false /*ignored*/, false /*ignored*/, 0);
+  return make_tl_object<telegram_api::chatBannedRights>(
+      flags, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/,
+      false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/,
+      false /*ignored*/, false /*ignored*/, 0);
 }
 
 bool operator==(const RestrictedRights &lhs, const RestrictedRights &rhs) {
diff --git a/td/telegram/MessageContent.cpp b/td/telegram/MessageContent.cpp
index 7aba8741c..f178893f2 100644
--- a/td/telegram/MessageContent.cpp
+++ b/td/telegram/MessageContent.cpp
@@ -5063,6 +5063,14 @@ unique_ptr<MessageContent> get_action_message_content(Td *td, tl_object_ptr<tele
       }
       return td::make_unique<MessageGiftPremium>(std::move(action->currency_), action->amount_, action->months_);
     }
+    case telegram_api::messageActionTopicCreate::ID: {
+      auto action = move_tl_object_as<telegram_api::messageActionTopicCreate>(action_ptr);
+      break;
+    }
+    case telegram_api::messageActionTopicEdit::ID: {
+      auto action = move_tl_object_as<telegram_api::messageActionTopicEdit>(action_ptr);
+      break;
+    }
     default:
       UNREACHABLE();
   }
diff --git a/td/telegram/MessagesManager.cpp b/td/telegram/MessagesManager.cpp
index d2686c622..71644abe2 100644
--- a/td/telegram/MessagesManager.cpp
+++ b/td/telegram/MessagesManager.cpp
@@ -650,7 +650,9 @@ class UnpinAllMessagesQuery final : public Td::ResultHandler {
       return on_error(Status::Error(400, "Can't unpin all messages"));
     }
 
-    send_query(G()->net_query_creator().create(telegram_api::messages_unpinAllMessages(std::move(input_peer))));
+    int32 flags = 0;
+    send_query(
+        G()->net_query_creator().create(telegram_api::messages_unpinAllMessages(flags, std::move(input_peer), 0)));
   }
 
   void on_result(BufferSlice packet) final {
@@ -1658,7 +1660,7 @@ class SaveDraftMessageQuery final : public Td::ResultHandler {
           td_->contacts_manager_.get(), draft_message->input_message_text.text.entities, "SaveDraftMessageQuery");
     }
     send_query(G()->net_query_creator().create(
-        telegram_api::messages_saveDraft(flags, false /*ignored*/, reply_to_message_id.get(), std::move(input_peer),
+        telegram_api::messages_saveDraft(flags, false /*ignored*/, reply_to_message_id.get(), 0, std::move(input_peer),
                                          draft_message == nullptr ? "" : draft_message->input_message_text.text.text,
                                          std::move(input_message_entities)),
         {{dialog_id}}));
@@ -2510,21 +2512,28 @@ class SearchMessagesQuery final : public Td::ResultHandler {
     top_thread_message_id_ = top_thread_message_id;
     random_id_ = random_id;
 
+    auto top_msg_id = top_thread_message_id.get_server_message_id().get();
+    auto offset_id = from_message_id.get_server_message_id().get();
     if (filter == MessageSearchFilter::UnreadMention) {
-      send_query(G()->net_query_creator().create(
-          telegram_api::messages_getUnreadMentions(std::move(input_peer), from_message_id.get_server_message_id().get(),
-                                                   offset, limit, std::numeric_limits<int32>::max(), 0)));
+      int32 flags = 0;
+      if (top_thread_message_id.is_valid()) {
+        flags |= telegram_api::messages_getUnreadMentions::TOP_MSG_ID_MASK;
+      }
+      send_query(G()->net_query_creator().create(telegram_api::messages_getUnreadMentions(
+          flags, std::move(input_peer), top_msg_id, offset_id, offset, limit, std::numeric_limits<int32>::max(), 0)));
     } else if (filter == MessageSearchFilter::UnreadReaction) {
+      int32 flags = 0;
+      if (top_thread_message_id.is_valid()) {
+        flags |= telegram_api::messages_getUnreadReactions::TOP_MSG_ID_MASK;
+      }
       send_query(G()->net_query_creator().create(telegram_api::messages_getUnreadReactions(
-          std::move(input_peer), from_message_id.get_server_message_id().get(), offset, limit,
-          std::numeric_limits<int32>::max(), 0)));
+          flags, std::move(input_peer), top_msg_id, offset_id, offset, limit, std::numeric_limits<int32>::max(), 0)));
     } else if (top_thread_message_id.is_valid() && query.empty() && !sender_dialog_id.is_valid() &&
                filter == MessageSearchFilter::Empty) {
       handle_errors_ = dialog_id.get_type() != DialogType::Channel ||
                        !td_->contacts_manager_->is_broadcast_channel(dialog_id.get_channel_id());
       send_query(G()->net_query_creator().create(telegram_api::messages_getReplies(
-          std::move(input_peer), top_thread_message_id.get_server_message_id().get(),
-          from_message_id.get_server_message_id().get(), 0, offset, limit, std::numeric_limits<int32>::max(), 0, 0)));
+          std::move(input_peer), top_msg_id, offset_id, 0, offset, limit, std::numeric_limits<int32>::max(), 0, 0)));
     } else {
       int32 flags = 0;
       tl_object_ptr<telegram_api::InputPeer> sender_input_peer;
@@ -2537,11 +2546,10 @@ class SearchMessagesQuery final : public Td::ResultHandler {
         flags |= telegram_api::messages_search::TOP_MSG_ID_MASK;
       }
 
-      send_query(G()->net_query_creator().create(telegram_api::messages_search(
-          flags, std::move(input_peer), query, std::move(sender_input_peer),
-          top_thread_message_id.get_server_message_id().get(), get_input_messages_filter(filter), 0,
-          std::numeric_limits<int32>::max(), from_message_id.get_server_message_id().get(), offset, limit,
-          std::numeric_limits<int32>::max(), 0, 0)));
+      send_query(G()->net_query_creator().create(
+          telegram_api::messages_search(flags, std::move(input_peer), query, std::move(sender_input_peer), top_msg_id,
+                                        get_input_messages_filter(filter), 0, std::numeric_limits<int32>::max(),
+                                        offset_id, offset, limit, std::numeric_limits<int32>::max(), 0, 0)));
     }
   }
 
@@ -2651,8 +2659,10 @@ class GetSearchCountersQuery final : public Td::ResultHandler {
     CHECK(filter != MessageSearchFilter::UnreadReaction);
     vector<telegram_api::object_ptr<telegram_api::MessagesFilter>> filters;
     filters.push_back(get_input_messages_filter(filter));
+
+    int32 flags = 0;
     send_query(G()->net_query_creator().create(
-        telegram_api::messages_getSearchCounters(std::move(input_peer), std::move(filters))));
+        telegram_api::messages_getSearchCounters(flags, std::move(input_peer), 0, std::move(filters))));
   }
 
   void on_result(BufferSlice packet) final {
@@ -3224,8 +3234,8 @@ class ReadMentionsQuery final : public Td::ResultHandler {
       return promise_.set_error(Status::Error(400, "Chat is not accessible"));
     }
 
-    send_query(
-        G()->net_query_creator().create(telegram_api::messages_readMentions(std::move(input_peer)), {{dialog_id}}));
+    send_query(G()->net_query_creator().create(telegram_api::messages_readMentions(0, std::move(input_peer), 0),
+                                               {{dialog_id}}));
   }
 
   void on_result(BufferSlice packet) final {
@@ -3259,8 +3269,9 @@ class ReadReactionsQuery final : public Td::ResultHandler {
       return promise_.set_error(Status::Error(400, "Chat is not accessible"));
     }
 
-    send_query(
-        G()->net_query_creator().create(telegram_api::messages_readReactions(std::move(input_peer)), {{dialog_id}}));
+    int32 flags = 0;
+    send_query(G()->net_query_creator().create(telegram_api::messages_readReactions(flags, std::move(input_peer), 0),
+                                               {{dialog_id}}));
   }
 
   void on_result(BufferSlice packet) final {
@@ -3343,7 +3354,7 @@ class SendMessageQuery final : public Td::ResultHandler {
     auto query = G()->net_query_creator().create(
         telegram_api::messages_sendMessage(
             flags, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/,
-            false /*ignored*/, std::move(input_peer), reply_to_message_id.get_server_message_id().get(), text,
+            false /*ignored*/, std::move(input_peer), reply_to_message_id.get_server_message_id().get(), 0, text,
             random_id, std::move(reply_markup), std::move(entities), schedule_date, std::move(as_input_peer)),
         {{dialog_id, MessageContentType::Text},
          {dialog_id, is_copy ? MessageContentType::Photo : MessageContentType::Text}});
@@ -3476,7 +3487,7 @@ class SendInlineBotResultQuery final : public Td::ResultHandler {
     auto query = G()->net_query_creator().create(
         telegram_api::messages_sendInlineBotResult(flags, false /*ignored*/, false /*ignored*/, false /*ignored*/,
                                                    false /*ignored*/, std::move(input_peer),
-                                                   reply_to_message_id.get_server_message_id().get(), random_id,
+                                                   reply_to_message_id.get_server_message_id().get(), 0, random_id,
                                                    query_id, result_id, schedule_date, std::move(as_input_peer)),
         {{dialog_id, MessageContentType::Text}, {dialog_id, MessageContentType::Photo}});
     auto send_query_ref = query.get_weak();
@@ -3540,7 +3551,7 @@ class SendMultiMediaQuery final : public Td::ResultHandler {
     send_query(G()->net_query_creator().create(
         telegram_api::messages_sendMultiMedia(flags, false /*ignored*/, false /*ignored*/, false /*ignored*/,
                                               false /*ignored*/, false /*ignored*/, std::move(input_peer),
-                                              reply_to_message_id.get_server_message_id().get(),
+                                              reply_to_message_id.get_server_message_id().get(), 0,
                                               std::move(input_single_media), schedule_date, std::move(as_input_peer)),
         {{dialog_id, is_copy ? MessageContentType::Text : MessageContentType::Photo},
          {dialog_id, MessageContentType::Photo}}));
@@ -3657,7 +3668,7 @@ class SendMediaQuery final : public Td::ResultHandler {
     auto query = G()->net_query_creator().create(
         telegram_api::messages_sendMedia(
             flags, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/,
-            std::move(input_peer), reply_to_message_id.get_server_message_id().get(), std::move(input_media), text,
+            std::move(input_peer), reply_to_message_id.get_server_message_id().get(), 0, std::move(input_media), text,
             random_id, std::move(reply_markup), std::move(entities), schedule_date, std::move(as_input_peer)),
         {{dialog_id, content_type}, {dialog_id, is_copy ? MessageContentType::Text : content_type}});
     if (td_->option_manager_->get_option_boolean("use_quick_ack") && was_uploaded_) {
@@ -4022,7 +4033,7 @@ class ForwardMessagesQuery final : public Td::ResultHandler {
         telegram_api::messages_forwardMessages(
             flags, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/,
             false /*ignored*/, std::move(from_input_peer), MessagesManager::get_server_message_ids(message_ids),
-            std::move(random_ids), std::move(to_input_peer), schedule_date, std::move(as_input_peer)),
+            std::move(random_ids), std::move(to_input_peer), 0, schedule_date, std::move(as_input_peer)),
         {{to_dialog_id, MessageContentType::Text}, {to_dialog_id, MessageContentType::Photo}});
     if (td_->option_manager_->get_option_boolean("use_quick_ack")) {
       query->quick_ack_promise_ = PromiseCreator::lambda([random_ids = random_ids_](Result<Unit> result) {
@@ -6728,7 +6739,6 @@ void MessagesManager::on_update_read_channel_messages_contents(
     LOG(ERROR) << "Receive invalid " << channel_id << " in updateChannelReadMessagesContents";
     return;
   }
-
   DialogId dialog_id = DialogId(channel_id);
 
   Dialog *d = get_dialog_force(dialog_id, "on_update_read_channel_messages_contents");
@@ -6737,6 +6747,11 @@ void MessagesManager::on_update_read_channel_messages_contents(
     return;
   }
 
+  if ((update->flags_ & telegram_api::updateChannelReadMessagesContents::TOP_MSG_ID_MASK) != 0) {
+    // TODO
+    return;
+  }
+
   for (auto &server_message_id : update->messages_) {
     read_channel_message_content_from_updates(d, MessageId(ServerMessageId(server_message_id)));
   }
diff --git a/td/telegram/NotificationManager.cpp b/td/telegram/NotificationManager.cpp
index 3151095d6..3f0df1b7b 100644
--- a/td/telegram/NotificationManager.cpp
+++ b/td/telegram/NotificationManager.cpp
@@ -3327,8 +3327,9 @@ Status NotificationManager::process_push_notification_payload(string payload, bo
         flags, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/,
         false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/,
         false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/,
-        false /*ignored*/, false /*ignored*/, false /*ignored*/, sender_user_id.get(), sender_access_hash, user_name,
-        string(), string(), string(), std::move(sender_photo), nullptr, 0, Auto(), string(), string(), nullptr);
+        false /*ignored*/, false /*ignored*/, false /*ignored*/, 0, sender_user_id.get(), sender_access_hash, user_name,
+        string(), string(), string(), std::move(sender_photo), nullptr, 0, Auto(), string(), string(), nullptr,
+        vector<telegram_api::object_ptr<telegram_api::username>>());
     td_->contacts_manager_->on_get_user(std::move(user), "process_push_notification_payload");
   }
 
@@ -3685,8 +3686,9 @@ void NotificationManager::add_message_push_notification(DialogId dialog_id, Mess
         flags, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/,
         false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/,
         false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/, false /*ignored*/,
-        false /*ignored*/, false /*ignored*/, false /*ignored*/, sender_user_id.get(), 0, user_name, string(), string(),
-        string(), nullptr, nullptr, 0, Auto(), string(), string(), nullptr);
+        false /*ignored*/, false /*ignored*/, false /*ignored*/, 0, sender_user_id.get(), 0, user_name, string(),
+        string(), string(), nullptr, nullptr, 0, Auto(), string(), string(), nullptr,
+        vector<telegram_api::object_ptr<telegram_api::username>>());
     td_->contacts_manager_->on_get_user(std::move(user), "add_message_push_notification");
   }
 
diff --git a/td/telegram/SpecialStickerSetType.cpp b/td/telegram/SpecialStickerSetType.cpp
index 106a8079c..e84bfe406 100644
--- a/td/telegram/SpecialStickerSetType.cpp
+++ b/td/telegram/SpecialStickerSetType.cpp
@@ -59,6 +59,9 @@ SpecialStickerSetType::SpecialStickerSetType(
     case telegram_api::inputStickerSetEmojiDefaultStatuses::ID:
       *this = default_statuses();
       break;
+    case telegram_api::inputStickerSetEmojiDefaultTopicIcons::ID:
+      *this = default_statuses();
+      break;
     default:
       UNREACHABLE();
       break;
diff --git a/td/telegram/SponsoredMessageManager.cpp b/td/telegram/SponsoredMessageManager.cpp
index 57b8f3815..64b9ab199 100644
--- a/td/telegram/SponsoredMessageManager.cpp
+++ b/td/telegram/SponsoredMessageManager.cpp
@@ -30,12 +30,12 @@
 namespace td {
 
 class GetSponsoredMessagesQuery final : public Td::ResultHandler {
-  Promise<telegram_api::object_ptr<telegram_api::messages_sponsoredMessages>> promise_;
+  Promise<telegram_api::object_ptr<telegram_api::messages_SponsoredMessages>> promise_;
   ChannelId channel_id_;
 
  public:
   explicit GetSponsoredMessagesQuery(
-      Promise<telegram_api::object_ptr<telegram_api::messages_sponsoredMessages>> &&promise)
+      Promise<telegram_api::object_ptr<telegram_api::messages_SponsoredMessages>> &&promise)
       : promise_(std::move(promise)) {
   }
 
@@ -225,7 +225,7 @@ void SponsoredMessageManager::get_dialog_sponsored_message(
   if (messages->promises.size() == 1) {
     auto query_promise = PromiseCreator::lambda(
         [actor_id = actor_id(this),
-         dialog_id](Result<telegram_api::object_ptr<telegram_api::messages_sponsoredMessages>> &&result) mutable {
+         dialog_id](Result<telegram_api::object_ptr<telegram_api::messages_SponsoredMessages>> &&result) mutable {
           send_closure(actor_id, &SponsoredMessageManager::on_get_dialog_sponsored_messages, dialog_id,
                        std::move(result));
         });
@@ -234,7 +234,7 @@ void SponsoredMessageManager::get_dialog_sponsored_message(
 }
 
 void SponsoredMessageManager::on_get_dialog_sponsored_messages(
-    DialogId dialog_id, Result<telegram_api::object_ptr<telegram_api::messages_sponsoredMessages>> &&result) {
+    DialogId dialog_id, Result<telegram_api::object_ptr<telegram_api::messages_SponsoredMessages>> &&result) {
   if (result.is_ok() && G()->close_flag()) {
     result = Global::request_aborted_error();
   }
@@ -252,75 +252,87 @@ void SponsoredMessageManager::on_get_dialog_sponsored_messages(
     return;
   }
 
-  auto sponsored_messages = result.move_as_ok();
+  auto sponsored_messages_ptr = result.move_as_ok();
+  switch (sponsored_messages_ptr->get_id()) {
+    case telegram_api::messages_sponsoredMessages::ID: {
+      auto sponsored_messages =
+          telegram_api::move_object_as<telegram_api::messages_sponsoredMessages>(sponsored_messages_ptr);
 
-  td_->contacts_manager_->on_get_users(std::move(sponsored_messages->users_), "on_get_dialog_sponsored_messages");
-  td_->contacts_manager_->on_get_chats(std::move(sponsored_messages->chats_), "on_get_dialog_sponsored_messages");
+      td_->contacts_manager_->on_get_users(std::move(sponsored_messages->users_), "on_get_dialog_sponsored_messages");
+      td_->contacts_manager_->on_get_chats(std::move(sponsored_messages->chats_), "on_get_dialog_sponsored_messages");
 
-  for (auto &sponsored_message : sponsored_messages->messages_) {
-    DialogId sponsor_dialog_id;
-    ServerMessageId server_message_id;
-    string invite_hash;
-    if (sponsored_message->from_id_ != nullptr) {
-      sponsor_dialog_id = DialogId(sponsored_message->from_id_);
-      if (!sponsor_dialog_id.is_valid() || !td_->messages_manager_->have_dialog_info_force(sponsor_dialog_id)) {
-        LOG(ERROR) << "Receive unknown sponsor " << sponsor_dialog_id;
-        continue;
+      for (auto &sponsored_message : sponsored_messages->messages_) {
+        DialogId sponsor_dialog_id;
+        ServerMessageId server_message_id;
+        string invite_hash;
+        if (sponsored_message->from_id_ != nullptr) {
+          sponsor_dialog_id = DialogId(sponsored_message->from_id_);
+          if (!sponsor_dialog_id.is_valid() || !td_->messages_manager_->have_dialog_info_force(sponsor_dialog_id)) {
+            LOG(ERROR) << "Receive unknown sponsor " << sponsor_dialog_id;
+            continue;
+          }
+          server_message_id = ServerMessageId(sponsored_message->channel_post_);
+          if (!server_message_id.is_valid() && server_message_id != ServerMessageId()) {
+            LOG(ERROR) << "Receive invalid channel post in " << to_string(sponsored_message);
+            server_message_id = ServerMessageId();
+          }
+          td_->messages_manager_->force_create_dialog(sponsor_dialog_id, "on_get_dialog_sponsored_messages");
+        } else if (sponsored_message->chat_invite_ != nullptr && !sponsored_message->chat_invite_hash_.empty()) {
+          auto invite_link = LinkManager::get_dialog_invite_link(sponsored_message->chat_invite_hash_, false);
+          if (invite_link.empty()) {
+            LOG(ERROR) << "Receive invalid invite link hash in " << to_string(sponsored_message);
+            continue;
+          }
+          auto chat_invite = to_string(sponsored_message->chat_invite_);
+          td_->contacts_manager_->on_get_dialog_invite_link_info(
+              invite_link, std::move(sponsored_message->chat_invite_), Promise<Unit>());
+          auto chat_invite_link_info = td_->contacts_manager_->get_chat_invite_link_info_object(invite_link);
+          if (chat_invite_link_info == nullptr) {
+            LOG(ERROR) << "Failed to get invite link info from " << chat_invite << " for "
+                       << to_string(sponsored_message);
+            continue;
+          }
+          invite_hash = std::move(sponsored_message->chat_invite_hash_);
+        } else {
+          LOG(ERROR) << "Receive " << to_string(sponsored_message);
+          continue;
+        }
+
+        auto message_text = get_message_text(td_->contacts_manager_.get(), std::move(sponsored_message->message_),
+                                             std::move(sponsored_message->entities_), true, true, 0, false,
+                                             "on_get_dialog_sponsored_messages");
+        int32 ttl = 0;
+        bool disable_web_page_preview = false;
+        auto content = get_message_content(td_, std::move(message_text), nullptr, sponsor_dialog_id, true, UserId(),
+                                           &ttl, &disable_web_page_preview, "on_get_dialog_sponsored_messages");
+        if (ttl != 0) {
+          LOG(ERROR) << "Receive sponsored message with TTL " << ttl;
+          continue;
+        }
+        CHECK(disable_web_page_preview);
+
+        current_sponsored_message_id_ = current_sponsored_message_id_.get_next_message_id(MessageType::Local);
+        if (!current_sponsored_message_id_.is_valid_sponsored()) {
+          LOG(ERROR) << "Sponsored message ID overflowed";
+          current_sponsored_message_id_ = MessageId::max().get_next_message_id(MessageType::Local);
+          CHECK(current_sponsored_message_id_.is_valid_sponsored());
+        }
+        auto local_id = current_sponsored_message_id_.get();
+        CHECK(!current_sponsored_message_id_.is_valid());
+        CHECK(!current_sponsored_message_id_.is_scheduled());
+        auto is_inserted =
+            messages->message_random_ids.emplace(local_id, sponsored_message->random_id_.as_slice().str()).second;
+        CHECK(is_inserted);
+        messages->messages.emplace_back(local_id, sponsored_message->recommended_, sponsor_dialog_id, server_message_id,
+                                        std::move(sponsored_message->start_param_), std::move(invite_hash),
+                                        std::move(content));
+        break;
       }
-      server_message_id = ServerMessageId(sponsored_message->channel_post_);
-      if (!server_message_id.is_valid() && server_message_id != ServerMessageId()) {
-        LOG(ERROR) << "Receive invalid channel post in " << to_string(sponsored_message);
-        server_message_id = ServerMessageId();
-      }
-      td_->messages_manager_->force_create_dialog(sponsor_dialog_id, "on_get_dialog_sponsored_messages");
-    } else if (sponsored_message->chat_invite_ != nullptr && !sponsored_message->chat_invite_hash_.empty()) {
-      auto invite_link = LinkManager::get_dialog_invite_link(sponsored_message->chat_invite_hash_, false);
-      if (invite_link.empty()) {
-        LOG(ERROR) << "Receive invalid invite link hash in " << to_string(sponsored_message);
-        continue;
-      }
-      auto chat_invite = to_string(sponsored_message->chat_invite_);
-      td_->contacts_manager_->on_get_dialog_invite_link_info(invite_link, std::move(sponsored_message->chat_invite_),
-                                                             Promise<Unit>());
-      auto chat_invite_link_info = td_->contacts_manager_->get_chat_invite_link_info_object(invite_link);
-      if (chat_invite_link_info == nullptr) {
-        LOG(ERROR) << "Failed to get invite link info from " << chat_invite << " for " << to_string(sponsored_message);
-        continue;
-      }
-      invite_hash = std::move(sponsored_message->chat_invite_hash_);
-    } else {
-      LOG(ERROR) << "Receive " << to_string(sponsored_message);
-      continue;
     }
-
-    auto message_text = get_message_text(td_->contacts_manager_.get(), std::move(sponsored_message->message_),
-                                         std::move(sponsored_message->entities_), true, true, 0, false,
-                                         "on_get_dialog_sponsored_messages");
-    int32 ttl = 0;
-    bool disable_web_page_preview = false;
-    auto content = get_message_content(td_, std::move(message_text), nullptr, sponsor_dialog_id, true, UserId(), &ttl,
-                                       &disable_web_page_preview, "on_get_dialog_sponsored_messages");
-    if (ttl != 0) {
-      LOG(ERROR) << "Receive sponsored message with TTL " << ttl;
-      continue;
-    }
-    CHECK(disable_web_page_preview);
-
-    current_sponsored_message_id_ = current_sponsored_message_id_.get_next_message_id(MessageType::Local);
-    if (!current_sponsored_message_id_.is_valid_sponsored()) {
-      LOG(ERROR) << "Sponsored message ID overflowed";
-      current_sponsored_message_id_ = MessageId::max().get_next_message_id(MessageType::Local);
-      CHECK(current_sponsored_message_id_.is_valid_sponsored());
-    }
-    auto local_id = current_sponsored_message_id_.get();
-    CHECK(!current_sponsored_message_id_.is_valid());
-    CHECK(!current_sponsored_message_id_.is_scheduled());
-    auto is_inserted =
-        messages->message_random_ids.emplace(local_id, sponsored_message->random_id_.as_slice().str()).second;
-    CHECK(is_inserted);
-    messages->messages.emplace_back(local_id, sponsored_message->recommended_, sponsor_dialog_id, server_message_id,
-                                    std::move(sponsored_message->start_param_), std::move(invite_hash),
-                                    std::move(content));
+    case telegram_api::messages_sponsoredMessagesEmpty::ID:
+      break;
+    default:
+      UNREACHABLE();
   }
 
   for (auto &promise : promises) {
diff --git a/td/telegram/SponsoredMessageManager.h b/td/telegram/SponsoredMessageManager.h
index 9c522d3b2..0163930bc 100644
--- a/td/telegram/SponsoredMessageManager.h
+++ b/td/telegram/SponsoredMessageManager.h
@@ -55,7 +55,7 @@ class SponsoredMessageManager final : public Actor {
       DialogId dialog_id, const DialogSponsoredMessages &sponsored_messages) const;
 
   void on_get_dialog_sponsored_messages(
-      DialogId dialog_id, Result<telegram_api::object_ptr<telegram_api::messages_sponsoredMessages>> &&result);
+      DialogId dialog_id, Result<telegram_api::object_ptr<telegram_api::messages_SponsoredMessages>> &&result);
 
   FlatHashMap<DialogId, unique_ptr<DialogSponsoredMessages>, DialogIdHash> dialog_sponsored_messages_;
 
diff --git a/td/telegram/StickersManager.cpp b/td/telegram/StickersManager.cpp
index 0393905bc..c8b6456d5 100644
--- a/td/telegram/StickersManager.cpp
+++ b/td/telegram/StickersManager.cpp
@@ -2919,6 +2919,7 @@ StickerSetId StickersManager::get_sticker_set_id(const tl_object_ptr<telegram_ap
     case telegram_api::inputStickerSetPremiumGifts::ID:
     case telegram_api::inputStickerSetEmojiGenericAnimations::ID:
     case telegram_api::inputStickerSetEmojiDefaultStatuses::ID:
+    case telegram_api::inputStickerSetEmojiDefaultTopicIcons::ID:
       LOG(ERROR) << "Receive special sticker set " << to_string(set_ptr);
       return add_special_sticker_set(SpecialStickerSetType(set_ptr)).id_;
     case telegram_api::inputStickerSetDice::ID:
@@ -2951,6 +2952,7 @@ StickerSetId StickersManager::add_sticker_set(tl_object_ptr<telegram_api::InputS
     case telegram_api::inputStickerSetPremiumGifts::ID:
     case telegram_api::inputStickerSetEmojiGenericAnimations::ID:
     case telegram_api::inputStickerSetEmojiDefaultStatuses::ID:
+    case telegram_api::inputStickerSetEmojiDefaultTopicIcons::ID:
       LOG(ERROR) << "Receive special sticker set " << to_string(set_ptr);
       return add_special_sticker_set(SpecialStickerSetType(set_ptr)).id_;
     case telegram_api::inputStickerSetDice::ID:
@@ -3148,6 +3150,7 @@ StickerSetId StickersManager::on_get_input_sticker_set(FileId sticker_file_id,
     case telegram_api::inputStickerSetPremiumGifts::ID:
     case telegram_api::inputStickerSetEmojiGenericAnimations::ID:
     case telegram_api::inputStickerSetEmojiDefaultStatuses::ID:
+    case telegram_api::inputStickerSetEmojiDefaultTopicIcons::ID:
       return add_special_sticker_set(SpecialStickerSetType(set_ptr)).id_;
     case telegram_api::inputStickerSetDice::ID:
       return StickerSetId();
diff --git a/td/telegram/UpdatesManager.cpp b/td/telegram/UpdatesManager.cpp
index 284232648..f6fba11f9 100644
--- a/td/telegram/UpdatesManager.cpp
+++ b/td/telegram/UpdatesManager.cpp
@@ -760,6 +760,8 @@ bool UpdatesManager::is_acceptable_message(const telegram_api::Message *message_
         case telegram_api::messageActionWebViewDataSentMe::ID:
         case telegram_api::messageActionWebViewDataSent::ID:
         case telegram_api::messageActionGiftPremium::ID:
+        case telegram_api::messageActionTopicCreate::ID:
+        case telegram_api::messageActionTopicEdit::ID:
           break;
         case telegram_api::messageActionChatCreate::ID: {
           auto chat_create = static_cast<const telegram_api::messageActionChatCreate *>(action);
@@ -2910,6 +2912,9 @@ void UpdatesManager::on_update(tl_object_ptr<telegram_api::updateNotifySettings>
       td_->notification_settings_manager_->on_update_scope_notify_settings(NotificationSettingsScope::Channel,
                                                                            std::move(update->notify_settings_));
       break;
+    case telegram_api::notifyForumTopic::ID:
+      // TODO
+      break;
     default:
       UNREACHABLE();
   }
@@ -3176,7 +3181,7 @@ void UpdatesManager::on_update(tl_object_ptr<telegram_api::updateUserStatus> upd
 
 void UpdatesManager::on_update(tl_object_ptr<telegram_api::updateUserName> update, Promise<Unit> &&promise) {
   td_->contacts_manager_->on_update_user_name(UserId(update->user_id_), std::move(update->first_name_),
-                                              std::move(update->last_name_), std::move(update->username_));
+                                              std::move(update->last_name_), string());
   promise.set_value(Unit());
 }
 
@@ -3609,4 +3614,8 @@ void UpdatesManager::on_update(tl_object_ptr<telegram_api::updateTranscribedAudi
 
 // unsupported updates
 
+void UpdatesManager::on_update(tl_object_ptr<telegram_api::updateChannelPinnedTopic> update, Promise<Unit> &&promise) {
+  promise.set_value(Unit());
+}
+
 }  // namespace td
diff --git a/td/telegram/UpdatesManager.h b/td/telegram/UpdatesManager.h
index 9841ab7c1..40645785f 100644
--- a/td/telegram/UpdatesManager.h
+++ b/td/telegram/UpdatesManager.h
@@ -541,6 +541,8 @@ class UpdatesManager final : public Actor {
   void on_update(tl_object_ptr<telegram_api::updateTranscribedAudio> update, Promise<Unit> &&promise);
 
   // unsupported updates
+
+  void on_update(tl_object_ptr<telegram_api::updateChannelPinnedTopic> update, Promise<Unit> &&promise);
 };
 
 }  // namespace td
diff --git a/td/telegram/Version.h b/td/telegram/Version.h
index a037edbda..fe3f22527 100644
--- a/td/telegram/Version.h
+++ b/td/telegram/Version.h
@@ -10,7 +10,7 @@
 
 namespace td {
 
-constexpr int32 MTPROTO_LAYER = 147;
+constexpr int32 MTPROTO_LAYER = 148;
 
 enum class Version : int32 {
   Initial,  // 0