diff --git a/td/generate/scheme/telegram_api.tl b/td/generate/scheme/telegram_api.tl
index 26dc4dbb8..bc3a06eca 100644
--- a/td/generate/scheme/telegram_api.tl
+++ b/td/generate/scheme/telegram_api.tl
@@ -109,12 +109,12 @@ userStatusLastWeek#7bf09fc = UserStatus;
 userStatusLastMonth#77ebc742 = UserStatus;
 
 chatEmpty#9ba2d800 id:int = Chat;
-chat#3bda1bde flags:# creator:flags.0?true kicked:flags.1?true left:flags.2?true deactivated:flags.5?true id:int 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;
+chat#3bda1bde flags:# creator:flags.0?true kicked:flags.1?true left:flags.2?true deactivated:flags.5?true call_active:flags.23?true call_not_empty:flags.24?true id:int 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#7328bdb id:int title:string = Chat;
 channel#d31a961e 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 id:int access_hash:flags.13?long title:string username:flags.6?string photo:ChatPhoto date:int version: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;
 channelForbidden#289da732 flags:# broadcast:flags.5?true megagroup:flags.8?true id:int access_hash:long title:string until_date:flags.16?int = Chat;
 
-chatFull#1b7c9db3 flags:# can_set_username:flags.7?true has_scheduled:flags.8?true id:int about:string participants:ChatParticipants chat_photo:flags.2?Photo notify_settings:PeerNotifySettings exported_invite:ExportedChatInvite bot_info:flags.3?Vector<BotInfo> pinned_msg_id:flags.6?int folder_id:flags.11?int = ChatFull;
+chatFull#dc8c181 flags:# can_set_username:flags.7?true has_scheduled:flags.8?true id:int about:string participants:ChatParticipants chat_photo:flags.2?Photo notify_settings:PeerNotifySettings exported_invite:ExportedChatInvite bot_info:flags.3?Vector<BotInfo> pinned_msg_id:flags.6?int folder_id:flags.11?int call:flags.12?InputGroupCall = ChatFull;
 channelFull#ef3a6acd flags:# can_view_participants:flags.3?true can_set_username:flags.6?true can_set_stickers:flags.7?true hidden_prehistory:flags.10?true can_set_location:flags.16?true has_scheduled:flags.19?true can_view_stats:flags.20?true blocked:flags.22?true id:int about:string participants_count:flags.0?int admins_count:flags.1?int kicked_count:flags.2?int banned_count:flags.2?int online_count:flags.13?int read_inbox_max_id:int read_outbox_max_id:int unread_count:int chat_photo:Photo notify_settings:PeerNotifySettings exported_invite:ExportedChatInvite bot_info:Vector<BotInfo> migrated_from_chat_id:flags.4?int migrated_from_max_id:flags.4?int pinned_msg_id:flags.5?int stickerset:flags.8?StickerSet available_min_id:flags.9?int folder_id:flags.11?int linked_chat_id:flags.14?int location:flags.15?ChannelLocation slowmode_seconds:flags.17?int slowmode_next_send_date:flags.18?int stats_dc:flags.12?int pts:int call:flags.21?InputGroupCall = ChatFull;
 
 chatParticipant#c8d7493e user_id:int inviter_id:int date:int = ChatParticipant;
@@ -352,8 +352,9 @@ updatePeerBlocked#246a4b22 peer_id:Peer blocked:Bool = Update;
 updateChannelUserTyping#ff2abe9f flags:# channel_id:int top_msg_id:flags.0?int user_id:int action:SendMessageAction = Update;
 updatePinnedMessages#ed85eab5 flags:# pinned:flags.0?true peer:Peer messages:Vector<int> pts:int pts_count:int = Update;
 updatePinnedChannelMessages#8588878b flags:# pinned:flags.0?true channel_id:int messages:Vector<int> pts:int pts_count:int = Update;
+updateChat#1330a196 chat_id:int = Update;
 updateGroupCallParticipants#f2ebdb4e call:InputGroupCall participants:Vector<GroupCallParticipant> version:int = Update;
-updateGroupCall#5724806e channel_id:int call:GroupCall = Update;
+updateGroupCall#a45eb99b chat_id:int call:GroupCall = Update;
 
 updates.state#a56c2a3e pts:int qts:int date:int seq:int unread_count:int = updates.State;
 
@@ -534,7 +535,7 @@ inputStickerSetShortName#861cc8a0 short_name:string = InputStickerSet;
 inputStickerSetAnimatedEmoji#28703c8 = InputStickerSet;
 inputStickerSetDice#e67f520e emoticon:string = InputStickerSet;
 
-stickerSet#eeb46f27 flags:# archived:flags.1?true official:flags.2?true masks:flags.3?true animated:flags.5?true installed_date:flags.0?int id:long access_hash:long title:string short_name:string thumb:flags.4?PhotoSize thumb_dc_id:flags.4?int count:int hash:int = StickerSet;
+stickerSet#40e237a8 flags:# archived:flags.1?true official:flags.2?true masks:flags.3?true animated:flags.5?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 count:int hash:int = StickerSet;
 
 messages.stickerSet#b60a24a6 set:StickerSet packs:Vector<StickerPack> documents:Vector<Document> = messages.StickerSet;
 
@@ -1547,7 +1548,7 @@ phone.discardCall#b2cbc1c0 flags:# video:flags.0?true peer:InputPhoneCall durati
 phone.setCallRating#59ead627 flags:# user_initiative:flags.0?true peer:InputPhoneCall rating:int comment:string = Updates;
 phone.saveCallDebug#277add7e peer:InputPhoneCall debug:DataJSON = Bool;
 phone.sendSignalingData#ff7a9383 peer:InputPhoneCall data:bytes = Bool;
-phone.createGroupCall#e428fa02 channel:InputChannel random_id:int = Updates;
+phone.createGroupCall#bd3dabe0 peer:InputPeer random_id:int = Updates;
 phone.joinGroupCall#5f9c8e62 flags:# muted:flags.0?true call:InputGroupCall params:DataJSON = Updates;
 phone.leaveGroupCall#500377f9 call:InputGroupCall source:int = Updates;
 phone.editGroupCallMember#63146ae4 flags:# muted:flags.0?true call:InputGroupCall user_id:InputUser = Updates;
diff --git a/td/generate/scheme/telegram_api.tlo b/td/generate/scheme/telegram_api.tlo
index 4c470231e..d8a062fd1 100644
Binary files a/td/generate/scheme/telegram_api.tlo and b/td/generate/scheme/telegram_api.tlo differ
diff --git a/td/telegram/GroupCallManager.cpp b/td/telegram/GroupCallManager.cpp
index 38c7efa3d..3c41d1ffb 100644
--- a/td/telegram/GroupCallManager.cpp
+++ b/td/telegram/GroupCallManager.cpp
@@ -33,11 +33,11 @@ class CreateGroupCallQuery : public Td::ResultHandler {
   void send(DialogId dialog_id) {
     dialog_id_ = dialog_id;
 
-    auto input_channel = td->contacts_manager_->get_input_channel(dialog_id.get_channel_id());
-    CHECK(input_channel != nullptr);
+    auto input_peer = td->messages_manager_->get_input_peer(dialog_id, AccessRights::Read);
+    CHECK(input_peer != nullptr);
 
     send_query(G()->net_query_creator().create(
-        telegram_api::phone_createGroupCall(std::move(input_channel), Random::secure_int32())));
+        telegram_api::phone_createGroupCall(std::move(input_peer), Random::secure_int32())));
   }
 
   void on_result(uint64 id, BufferSlice packet) override {
@@ -597,8 +597,18 @@ void GroupCallManager::create_voice_chat(DialogId dialog_id, Promise<GroupCallId
   if (!td_->messages_manager_->have_dialog_force(dialog_id)) {
     return promise.set_error(Status::Error(400, "Chat not found"));
   }
+  if (!td_->messages_manager_->have_input_peer(dialog_id, AccessRights::Read)) {
+    return promise.set_error(Status::Error(400, "Can't access chat"));
+  }
 
   switch (dialog_id.get_type()) {
+    case DialogType::Chat: {
+      auto chat_id = dialog_id.get_chat_id();
+      if (!td_->contacts_manager_->get_chat_permissions(chat_id).can_manage_calls()) {
+        return promise.set_error(Status::Error(400, "Not enough rights in the chat"));
+      }
+      break;
+    }
     case DialogType::Channel: {
       auto channel_id = dialog_id.get_channel_id();
       switch (td_->contacts_manager_->get_channel_type(channel_id)) {
@@ -618,7 +628,6 @@ void GroupCallManager::create_voice_chat(DialogId dialog_id, Promise<GroupCallId
       }
       break;
     }
-    case DialogType::Chat:
     case DialogType::User:
     case DialogType::SecretChat:
       return promise.set_error(Status::Error(400, "Chat can't have a voice chat"));
diff --git a/td/telegram/StickersManager.cpp b/td/telegram/StickersManager.cpp
index 1f37ada1b..aaba857c1 100644
--- a/td/telegram/StickersManager.cpp
+++ b/td/telegram/StickersManager.cpp
@@ -2401,9 +2401,9 @@ StickerSetId StickersManager::on_get_sticker_set(tl_object_ptr<telegram_api::sti
 
   PhotoSize thumbnail;
   string minithumbnail;
-  if (set->thumb_ != nullptr) {
+  for (auto &thumb : set->thumbs_) {
     auto photo_size = get_photo_size(td_->file_manager_.get(), {set_id.get(), s->access_hash}, 0, 0, "",
-                                     DcId::create(set->thumb_dc_id_), DialogId(), std::move(set->thumb_),
+                                     DcId::create(set->thumb_dc_id_), DialogId(), std::move(thumb),
                                      is_animated ? PhotoFormat::Tgs : PhotoFormat::Webp, false);
     if (photo_size.get_offset() == 0) {
       if (!thumbnail.file_id.is_valid()) {
diff --git a/td/telegram/UpdatesManager.cpp b/td/telegram/UpdatesManager.cpp
index 7425b174f..c44cddab4 100644
--- a/td/telegram/UpdatesManager.cpp
+++ b/td/telegram/UpdatesManager.cpp
@@ -1704,6 +1704,10 @@ void UpdatesManager::on_update(tl_object_ptr<telegram_api::updateServiceNotifica
   td_->messages_manager_->on_update_service_notification(std::move(update), true, Promise<Unit>());
 }
 
+void UpdatesManager::on_update(tl_object_ptr<telegram_api::updateChat> update, bool /*force_apply*/) {
+  // nothing to do
+}
+
 void UpdatesManager::on_update(tl_object_ptr<telegram_api::updateReadChannelInbox> update, bool /*force_apply*/) {
   CHECK(update != nullptr);
   td_->messages_manager_->on_update_read_channel_inbox(std::move(update));
@@ -2148,8 +2152,14 @@ void UpdatesManager::on_update(tl_object_ptr<telegram_api::updatePhoneCallSignal
 }
 
 void UpdatesManager::on_update(tl_object_ptr<telegram_api::updateGroupCall> update, bool /*force_apply*/) {
-  send_closure(G()->group_call_manager(), &GroupCallManager::on_update_group_call, std::move(update->call_),
-               DialogId(ChannelId(update->channel_id_)));
+  DialogId dialog_id(ChatId(update->chat_id_));
+  if (!td_->messages_manager_->have_dialog(dialog_id)) {
+    dialog_id = DialogId(ChannelId(update->chat_id_));
+    if (!td_->messages_manager_->have_dialog(dialog_id)) {
+      dialog_id = DialogId();
+    }
+  }
+  send_closure(G()->group_call_manager(), &GroupCallManager::on_update_group_call, std::move(update->call_), dialog_id);
 }
 
 void UpdatesManager::on_update(tl_object_ptr<telegram_api::updateGroupCallParticipants> update, bool /*force_apply*/) {
diff --git a/td/telegram/UpdatesManager.h b/td/telegram/UpdatesManager.h
index 36ac2de72..05fd0782a 100644
--- a/td/telegram/UpdatesManager.h
+++ b/td/telegram/UpdatesManager.h
@@ -238,6 +238,8 @@ class UpdatesManager : public Actor {
 
   void on_update(tl_object_ptr<telegram_api::updateDcOptions> update, bool /*force_apply*/);
 
+  void on_update(tl_object_ptr<telegram_api::updateChat> update, bool /*force_apply*/);
+
   void on_update(tl_object_ptr<telegram_api::updateNewChannelMessage> update, bool /*force_apply*/);
   void on_update(tl_object_ptr<telegram_api::updateReadChannelInbox> update, bool /*force_apply*/);
   void on_update(tl_object_ptr<telegram_api::updateReadChannelOutbox> update, bool /*force_apply*/);
@@ -245,16 +247,16 @@ class UpdatesManager : public Actor {
   void on_update(tl_object_ptr<telegram_api::updateChannelTooLong> update, bool force_apply);
   void on_update(tl_object_ptr<telegram_api::updateChannel> update, bool force_apply);
   void on_update(tl_object_ptr<telegram_api::updateEditChannelMessage> update, bool /*force_apply*/);
-  void on_update(tl_object_ptr<telegram_api::updateDeleteChannelMessages> update, bool force_apply);
-  void on_update(tl_object_ptr<telegram_api::updateChannelMessageViews> update, bool force_apply);
-  void on_update(tl_object_ptr<telegram_api::updateChannelMessageForwards> update, bool force_apply);
+  void on_update(tl_object_ptr<telegram_api::updateDeleteChannelMessages> update, bool /*force_apply*/);
+  void on_update(tl_object_ptr<telegram_api::updateChannelMessageViews> update, bool /*force_apply*/);
+  void on_update(tl_object_ptr<telegram_api::updateChannelMessageForwards> update, bool /*force_apply*/);
   void on_update(tl_object_ptr<telegram_api::updateChannelAvailableMessages> update, bool /*force_apply*/);
 
   void on_update(tl_object_ptr<telegram_api::updateReadChannelDiscussionInbox> update, bool /*force_apply*/);
   void on_update(tl_object_ptr<telegram_api::updateReadChannelDiscussionOutbox> update, bool /*force_apply*/);
 
   void on_update(tl_object_ptr<telegram_api::updatePinnedMessages> update, bool force_apply);
-  void on_update(tl_object_ptr<telegram_api::updatePinnedChannelMessages> update, bool force_apply);
+  void on_update(tl_object_ptr<telegram_api::updatePinnedChannelMessages> update, bool /*force_apply*/);
 
   void on_update(tl_object_ptr<telegram_api::updateDraftMessage> update, bool /*force_apply*/);