diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2a1928a36..fadd00d0d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,7 +6,7 @@ if (POLICY CMP0065)
   cmake_policy(SET CMP0065 NEW)
 endif()
 
-project(TelegramBotApi VERSION 6.6 LANGUAGES CXX)
+project(TelegramBotApi VERSION 6.7.1 LANGUAGES CXX)
 
 if (POLICY CMP0069)
   option(TELEGRAM_BOT_API_ENABLE_LTO "Use \"ON\" to enable Link Time Optimization.")
@@ -73,6 +73,9 @@ if (CLANG OR GCC)
     elseif (APPLE)
       set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-no_pie")
     endif()
+    include(AddCXXCompilerFlag)
+    add_cxx_compiler_flag("-static-libstdc++")
+    add_cxx_compiler_flag("-static-libgcc")
   endif()
 endif()
 
diff --git a/td b/td
index 70bee089d..328b8649d 160000
--- a/td
+++ b/td
@@ -1 +1 @@
-Subproject commit 70bee089d492437ce931aa78446d89af3da182fc
+Subproject commit 328b8649d859c5ed4088a875cbb059db6029dc0d
diff --git a/telegram-bot-api/Client.cpp b/telegram-bot-api/Client.cpp
index ab657b873..92541b6d5 100644
--- a/telegram-bot-api/Client.cpp
+++ b/telegram-bot-api/Client.cpp
@@ -57,7 +57,7 @@ using td_api::move_object_as;
 
 int Client::get_retry_after_time(td::Slice error_message) {
   td::Slice prefix = "Too Many Requests: retry after ";
-  if (begins_with(error_message, prefix)) {
+  if (td::begins_with(error_message, prefix)) {
     auto r_retry_after = td::to_integer_safe<int>(error_message.substr(prefix.size()));
     if (r_retry_after.is_ok() && r_retry_after.ok() > 0) {
       return r_retry_after.ok();
@@ -173,7 +173,7 @@ void Client::fail_query_with_error(PromisedQueryPtr query, int32 error_code, td:
       return fail_query(400, PSLICE() << "Bad Request: " << error_message, std::move(query));
   }
 
-  if (begins_with(error_message, prefix)) {
+  if (td::begins_with(error_message, prefix)) {
     return fail_query(error_code, error_message, std::move(query));
   } else {
     td::string error_str = prefix.str();
@@ -225,6 +225,8 @@ bool Client::init_methods() {
   methods_.emplace("deletemycommands", &Client::process_delete_my_commands_query);
   methods_.emplace("getmydefaultadministratorrights", &Client::process_get_my_default_administrator_rights_query);
   methods_.emplace("setmydefaultadministratorrights", &Client::process_set_my_default_administrator_rights_query);
+  methods_.emplace("getmyname", &Client::process_get_my_name_query);
+  methods_.emplace("setmyname", &Client::process_set_my_name_query);
   methods_.emplace("getmydescription", &Client::process_get_my_description_query);
   methods_.emplace("setmydescription", &Client::process_set_my_description_query);
   methods_.emplace("getmyshortdescription", &Client::process_get_my_short_description_query);
@@ -1928,10 +1930,28 @@ class Client::JsonInlineKeyboardButton final : public td::Jsonable {
         break;
       case td_api::inlineKeyboardButtonTypeSwitchInline::ID: {
         auto type = static_cast<const td_api::inlineKeyboardButtonTypeSwitchInline *>(button_->type_.get());
-        if (type->in_current_chat_) {
-          object("switch_inline_query_current_chat", type->query_);
-        } else {
-          object("switch_inline_query", type->query_);
+        switch (type->target_chat_->get_id()) {
+          case td_api::targetChatCurrent::ID:
+            object("switch_inline_query_current_chat", type->query_);
+            break;
+          case td_api::targetChatChosen::ID: {
+            auto target_chat = static_cast<const td_api::targetChatChosen *>(type->target_chat_.get());
+            if (target_chat->allow_user_chats_ && target_chat->allow_bot_chats_ && target_chat->allow_group_chats_ &&
+                target_chat->allow_channel_chats_) {
+              object("switch_inline_query", type->query_);
+            } else {
+              object("switch_inline_query_chosen_chat", td::json_object([&](auto &o) {
+                       o("query", type->query_);
+                       o("allow_user_chats", td::JsonBool(target_chat->allow_user_chats_));
+                       o("allow_bot_chats", td::JsonBool(target_chat->allow_bot_chats_));
+                       o("allow_group_chats", td::JsonBool(target_chat->allow_group_chats_));
+                       o("allow_channel_chats", td::JsonBool(target_chat->allow_channel_chats_));
+                     }));
+            }
+            break;
+          }
+          default:
+            UNREACHABLE();
         }
         break;
       }
@@ -2384,6 +2404,8 @@ void Client::JsonMessage::store(td::JsonValueScope *scope) const {
       object("chat_shared", JsonChatShared(content));
       break;
     }
+    case td_api::messageChatSetBackground::ID:
+      break;
     default:
       UNREACHABLE();
   }
@@ -2702,6 +2724,19 @@ class Client::JsonBotMenuButton final : public td::Jsonable {
   const td_api::botMenuButton *menu_button_;
 };
 
+class Client::JsonBotName final : public td::Jsonable {
+ public:
+  explicit JsonBotName(const td_api::text *text) : text_(text) {
+  }
+  void store(td::JsonValueScope *scope) const {
+    auto object = scope->enter_object();
+    object("name", text_->text_);
+  }
+
+ private:
+  const td_api::text *text_;
+};
+
 class Client::JsonBotInfoDescription final : public td::Jsonable {
  public:
   explicit JsonBotInfoDescription(const td_api::text *text) : text_(text) {
@@ -2904,6 +2939,9 @@ class Client::JsonChatMemberUpdated final : public td::Jsonable {
     if (update_->invite_link_ != nullptr) {
       object("invite_link", JsonChatInviteLink(update_->invite_link_.get(), client_));
     }
+    if (update_->via_chat_folder_invite_link_) {
+      object("via_chat_folder_invite_link", td::JsonTrue());
+    }
   }
 
  private:
@@ -4172,6 +4210,25 @@ class Client::TdOnGetMyDefaultAdministratorRightsCallback final : public TdQuery
   PromisedQueryPtr query_;
 };
 
+class Client::TdOnGetMyNameCallback final : public TdQueryCallback {
+ public:
+  explicit TdOnGetMyNameCallback(PromisedQueryPtr query) : query_(std::move(query)) {
+  }
+
+  void on_result(object_ptr<td_api::Object> result) final {
+    if (result->get_id() == td_api::error::ID) {
+      return fail_query_with_error(std::move(query_), move_object_as<td_api::error>(result));
+    }
+
+    CHECK(result->get_id() == td_api::text::ID);
+    auto text = move_object_as<td_api::text>(result);
+    answer_query(JsonBotName(text.get()), std::move(query_));
+  }
+
+ private:
+  PromisedQueryPtr query_;
+};
+
 class Client::TdOnGetMyDescriptionCallback final : public TdQueryCallback {
  public:
   explicit TdOnGetMyDescriptionCallback(PromisedQueryPtr query) : query_(std::move(query)) {
@@ -5547,9 +5604,9 @@ void Client::on_update_authorization_state() {
       send_request(make_object<td_api::setOption>("reuse_uploaded_photos_by_hash",
                                                   make_object<td_api::optionValueBoolean>(true)),
                    td::make_unique<TdOnOkCallback>());
-      send_request(make_object<td_api::setOption>("disable_persistent_network_statistics",
-                                                  make_object<td_api::optionValueBoolean>(true)),
-                   td::make_unique<TdOnOkCallback>());
+      send_request(
+          make_object<td_api::setOption>("disable_network_statistics", make_object<td_api::optionValueBoolean>(true)),
+          td::make_unique<TdOnOkCallback>());
       send_request(make_object<td_api::setOption>("disable_time_adjustment_protection",
                                                   make_object<td_api::optionValueBoolean>(true)),
                    td::make_unique<TdOnOkCallback>());
@@ -6271,13 +6328,31 @@ td::Result<td_api::object_ptr<td_api::inlineKeyboardButton>> Client::get_inline_
   if (has_json_object_field(object, "switch_inline_query")) {
     TRY_RESULT(switch_inline_query, get_json_object_string_field(object, "switch_inline_query", false));
     return make_object<td_api::inlineKeyboardButton>(
-        text, make_object<td_api::inlineKeyboardButtonTypeSwitchInline>(switch_inline_query, false));
+        text, make_object<td_api::inlineKeyboardButtonTypeSwitchInline>(
+                  switch_inline_query, td_api::make_object<td_api::targetChatChosen>(true, true, true, true)));
+  }
+
+  if (has_json_object_field(object, "switch_inline_query_chosen_chat")) {
+    TRY_RESULT(switch_inline_query,
+               get_json_object_field(object, "switch_inline_query_chosen_chat", td::JsonValue::Type::Object, false));
+    CHECK(switch_inline_query.type() == td::JsonValue::Type::Object);
+    auto &switch_inline_query_object = switch_inline_query.get_object();
+    TRY_RESULT(query, get_json_object_string_field(switch_inline_query_object, "query"));
+    TRY_RESULT(allow_user_chats, get_json_object_bool_field(switch_inline_query_object, "allow_user_chats"));
+    TRY_RESULT(allow_bot_chats, get_json_object_bool_field(switch_inline_query_object, "allow_bot_chats"));
+    TRY_RESULT(allow_group_chats, get_json_object_bool_field(switch_inline_query_object, "allow_group_chats"));
+    TRY_RESULT(allow_channel_chats, get_json_object_bool_field(switch_inline_query_object, "allow_channel_chats"));
+    return make_object<td_api::inlineKeyboardButton>(
+        text, make_object<td_api::inlineKeyboardButtonTypeSwitchInline>(
+                  query, td_api::make_object<td_api::targetChatChosen>(allow_user_chats, allow_bot_chats,
+                                                                       allow_group_chats, allow_channel_chats)));
   }
 
   if (has_json_object_field(object, "switch_inline_query_current_chat")) {
     TRY_RESULT(switch_inline_query, get_json_object_string_field(object, "switch_inline_query_current_chat", false));
     return make_object<td_api::inlineKeyboardButton>(
-        text, make_object<td_api::inlineKeyboardButtonTypeSwitchInline>(switch_inline_query, true));
+        text, make_object<td_api::inlineKeyboardButtonTypeSwitchInline>(
+                  switch_inline_query, td_api::make_object<td_api::targetChatCurrent>()));
   }
 
   if (has_json_object_field(object, "login_url")) {
@@ -8710,9 +8785,24 @@ td::Status Client::process_set_my_default_administrator_rights_query(PromisedQue
   return td::Status::OK();
 }
 
+td::Status Client::process_get_my_name_query(PromisedQueryPtr &query) {
+  auto language_code = query->arg("language_code");
+  send_request(make_object<td_api::getBotName>(my_id_, language_code.str()),
+               td::make_unique<TdOnGetMyNameCallback>(std::move(query)));
+  return td::Status::OK();
+}
+
+td::Status Client::process_set_my_name_query(PromisedQueryPtr &query) {
+  auto language_code = query->arg("language_code");
+  auto name = query->arg("name");
+  send_request(make_object<td_api::setBotName>(my_id_, language_code.str(), name.str()),
+               td::make_unique<TdOnOkQueryCallback>(std::move(query)));
+  return td::Status::OK();
+}
+
 td::Status Client::process_get_my_description_query(PromisedQueryPtr &query) {
   auto language_code = query->arg("language_code");
-  send_request(make_object<td_api::getBotInfoDescription>(language_code.str()),
+  send_request(make_object<td_api::getBotInfoDescription>(my_id_, language_code.str()),
                td::make_unique<TdOnGetMyDescriptionCallback>(std::move(query)));
   return td::Status::OK();
 }
@@ -8720,14 +8810,14 @@ td::Status Client::process_get_my_description_query(PromisedQueryPtr &query) {
 td::Status Client::process_set_my_description_query(PromisedQueryPtr &query) {
   auto language_code = query->arg("language_code");
   auto description = query->arg("description");
-  send_request(make_object<td_api::setBotInfoDescription>(language_code.str(), description.str()),
+  send_request(make_object<td_api::setBotInfoDescription>(my_id_, language_code.str(), description.str()),
                td::make_unique<TdOnOkQueryCallback>(std::move(query)));
   return td::Status::OK();
 }
 
 td::Status Client::process_get_my_short_description_query(PromisedQueryPtr &query) {
   auto language_code = query->arg("language_code");
-  send_request(make_object<td_api::getBotInfoShortDescription>(language_code.str()),
+  send_request(make_object<td_api::getBotInfoShortDescription>(my_id_, language_code.str()),
                td::make_unique<TdOnGetMyShortDescriptionCallback>(std::move(query)));
   return td::Status::OK();
 }
@@ -8735,7 +8825,7 @@ td::Status Client::process_get_my_short_description_query(PromisedQueryPtr &quer
 td::Status Client::process_set_my_short_description_query(PromisedQueryPtr &query) {
   auto language_code = query->arg("language_code");
   auto short_description = query->arg("short_description");
-  send_request(make_object<td_api::setBotInfoShortDescription>(language_code.str(), short_description.str()),
+  send_request(make_object<td_api::setBotInfoShortDescription>(my_id_, language_code.str(), short_description.str()),
                td::make_unique<TdOnOkQueryCallback>(std::move(query)));
   return td::Status::OK();
 }
@@ -11525,7 +11615,8 @@ void Client::do_get_updates(int32 offset, int32 limit, int32 timeout, PromisedQu
   if (need_warning && previous_get_updates_finish_time_ > 0) {
     LOG(WARNING) << "Found " << updates.size() << " updates out of " << (total_size + updates.size())
                  << " after last getUpdates call " << (query->start_timestamp() - previous_get_updates_finish_time_)
-                 << " seconds ago in " << (td::Time::now() - query->start_timestamp()) << " seconds";
+                 << " seconds ago in " << (td::Time::now() - query->start_timestamp()) << " seconds from "
+                 << query->get_peer_ip_address();
   } else {
     LOG(DEBUG) << "Found " << updates.size() << " updates out of " << total_size << " from " << from;
   }
@@ -12442,6 +12533,8 @@ bool Client::need_skip_update_message(int64 chat_id, const object_ptr<td_api::me
       return true;
     case td_api::messageSuggestProfilePhoto::ID:
       return true;
+    case td_api::messageChatSetBackground::ID:
+      return true;
     default:
       break;
   }
@@ -12564,7 +12657,8 @@ bool Client::are_equal_inline_keyboard_buttons(const td_api::inlineKeyboardButto
     case td_api::inlineKeyboardButtonTypeSwitchInline::ID: {
       auto lhs_type = static_cast<const td_api::inlineKeyboardButtonTypeSwitchInline *>(lhs->type_.get());
       auto rhs_type = static_cast<const td_api::inlineKeyboardButtonTypeSwitchInline *>(rhs->type_.get());
-      return lhs_type->query_ == rhs_type->query_ && lhs_type->in_current_chat_ == rhs_type->in_current_chat_;
+      return lhs_type->query_ == rhs_type->query_ &&
+             to_string(lhs_type->target_chat_) == to_string(rhs_type->target_chat_);
     }
     case td_api::inlineKeyboardButtonTypeBuy::ID:
       return true;
diff --git a/telegram-bot-api/Client.h b/telegram-bot-api/Client.h
index 14c993af7..f059a0aa9 100644
--- a/telegram-bot-api/Client.h
+++ b/telegram-bot-api/Client.h
@@ -150,6 +150,7 @@ class Client final : public WebhookActor::Callback {
   class JsonPreCheckoutQuery;
   class JsonBotCommand;
   class JsonBotMenuButton;
+  class JsonBotName;
   class JsonBotInfoDescription;
   class JsonBotInfoShortDescription;
   class JsonChatAdministratorRights;
@@ -214,6 +215,7 @@ class Client final : public WebhookActor::Callback {
   class TdOnGetMenuButtonCallback;
   class TdOnGetMyCommandsCallback;
   class TdOnGetMyDefaultAdministratorRightsCallback;
+  class TdOnGetMyNameCallback;
   class TdOnGetMyDescriptionCallback;
   class TdOnGetMyShortDescriptionCallback;
   class TdOnGetChatFullInfoCallback;
@@ -573,6 +575,8 @@ class Client final : public WebhookActor::Callback {
   td::Status process_delete_my_commands_query(PromisedQueryPtr &query);
   td::Status process_get_my_default_administrator_rights_query(PromisedQueryPtr &query);
   td::Status process_set_my_default_administrator_rights_query(PromisedQueryPtr &query);
+  td::Status process_get_my_name_query(PromisedQueryPtr &query);
+  td::Status process_set_my_name_query(PromisedQueryPtr &query);
   td::Status process_get_my_description_query(PromisedQueryPtr &query);
   td::Status process_set_my_description_query(PromisedQueryPtr &query);
   td::Status process_get_my_short_description_query(PromisedQueryPtr &query);
diff --git a/telegram-bot-api/ClientManager.cpp b/telegram-bot-api/ClientManager.cpp
index 681530281..5f351c25a 100644
--- a/telegram-bot-api/ClientManager.cpp
+++ b/telegram-bot-api/ClientManager.cpp
@@ -177,13 +177,7 @@ void ClientManager::user_login(PromisedQueryPtr query) {
 }
 
 bool ClientManager::check_flood_limits(PromisedQueryPtr &query, bool is_user_login) {
-  td::string ip_address;
-  if (query->peer_address().is_valid() && !query->peer_address().is_reserved()) {  // external connection
-    ip_address = query->peer_address().get_ip_str().str();
-  } else {
-    // invalid peer address or connection from the local network
-    ip_address = query->get_header("x-real-ip").str();
-  }
+  td::string ip_address = query->get_peer_ip_address();
   if (!ip_address.empty()) {
     td::IPAddress tmp;
     tmp.init_host_port(ip_address, 0).ignore();
@@ -192,7 +186,7 @@ bool ClientManager::check_flood_limits(PromisedQueryPtr &query, bool is_user_log
       ip_address = tmp.get_ip_str().str();
     }
   }
-  LOG(DEBUG) << "Receive incoming query for new bot " << query->token() << " from " << query->peer_address();
+  LOG(DEBUG) << "Receive incoming query for new bot " << query->token() << " from " << ip_address;
   if (!ip_address.empty()) {
     LOG(DEBUG) << "Check Client creation flood control for IP address " << ip_address;
     if (is_user_login) {
diff --git a/telegram-bot-api/Query.cpp b/telegram-bot-api/Query.cpp
index 942956474..6ef2ae184 100644
--- a/telegram-bot-api/Query.cpp
+++ b/telegram-bot-api/Query.cpp
@@ -26,10 +26,10 @@ td::FlatHashMap<td::string, td::unique_ptr<td::VirtuallyJsonable>> empty_paramet
 Query::Query(td::vector<td::BufferSlice> &&container, td::Slice token, bool is_user, bool is_test_dc, td::MutableSlice method,
              td::vector<std::pair<td::MutableSlice, td::MutableSlice>> &&args,
              td::vector<std::pair<td::MutableSlice, td::MutableSlice>> &&headers, td::vector<td::HttpFile> &&files,
-             std::shared_ptr<SharedData> shared_data, const td::IPAddress &peer_address, bool is_internal)
+             std::shared_ptr<SharedData> shared_data, const td::IPAddress &peer_ip_address, bool is_internal)
     : state_(State::Query)
     , shared_data_(shared_data)
-    , peer_address_(peer_address)
+    , peer_ip_address_(peer_ip_address)
     , container_(std::move(container))
     , token_(token)
     , is_user_(is_user)
@@ -54,6 +54,15 @@ Query::Query(td::vector<td::BufferSlice> &&container, td::Slice token, bool is_u
   }
 }
 
+td::string Query::get_peer_ip_address() const {
+  if (peer_ip_address_.is_valid() && !peer_ip_address_.is_reserved()) {  // external connection
+    return peer_ip_address_.get_ip_str().str();
+  } else {
+    // invalid peer IP address or connection from the local network
+    return get_header("x-real-ip").str();
+  }
+}
+
 td::int64 Query::query_size() const {
   return std::accumulate(
       container_.begin(), container_.end(), td::int64{0},
diff --git a/telegram-bot-api/Query.h b/telegram-bot-api/Query.h
index 18cf01050..b956e142e 100644
--- a/telegram-bot-api/Query.h
+++ b/telegram-bot-api/Query.h
@@ -73,9 +73,7 @@ class Query final : public td::ListNode {
     return files_;
   }
 
-  const td::IPAddress &peer_address() const {
-    return peer_address_;
-  }
+  td::string get_peer_ip_address() const;
 
   td::BufferSlice &answer() {
     return answer_;
@@ -106,7 +104,7 @@ class Query final : public td::ListNode {
   Query(td::vector<td::BufferSlice> &&container, td::Slice token, bool is_user, bool is_test_dc, td::MutableSlice method,
         td::vector<std::pair<td::MutableSlice, td::MutableSlice>> &&args,
         td::vector<std::pair<td::MutableSlice, td::MutableSlice>> &&headers, td::vector<td::HttpFile> &&files,
-        std::shared_ptr<SharedData> shared_data, const td::IPAddress &peer_address, bool is_internal);
+        std::shared_ptr<SharedData> shared_data, const td::IPAddress &peer_ip_address, bool is_internal);
   Query(const Query &) = delete;
   Query &operator=(const Query &) = delete;
   Query(Query &&) = delete;
@@ -132,7 +130,7 @@ class Query final : public td::ListNode {
   State state_;
   std::shared_ptr<SharedData> shared_data_;
   double start_timestamp_;
-  td::IPAddress peer_address_;
+  td::IPAddress peer_ip_address_;
   td::ActorId<BotStatActor> stat_actor_;
 
   // request
diff --git a/telegram-bot-api/Watchdog.cpp b/telegram-bot-api/Watchdog.cpp
index 1bb15e6a2..9b5c88d63 100644
--- a/telegram-bot-api/Watchdog.cpp
+++ b/telegram-bot-api/Watchdog.cpp
@@ -13,7 +13,7 @@ namespace telegram_bot_api {
 
 void Watchdog::kick() {
   auto now = td::Time::now();
-  if (now >= last_kick_time_ + timeout_ && last_kick_time_ > 0) {
+  if (now >= last_kick_time_ + timeout_ && last_kick_time_ > 0 && GET_VERBOSITY_LEVEL() >= VERBOSITY_NAME(ERROR)) {
     LOG(ERROR) << get_name() << " timeout expired after " << now - last_kick_time_ << " seconds";
     td::thread::send_real_time_signal(main_thread_id_, 2);
   }
diff --git a/telegram-bot-api/WebhookActor.cpp b/telegram-bot-api/WebhookActor.cpp
index 630cb836a..548398d68 100644
--- a/telegram-bot-api/WebhookActor.cpp
+++ b/telegram-bot-api/WebhookActor.cpp
@@ -207,7 +207,7 @@ td::Status WebhookActor::create_webhook_error(td::Slice error_message, td::Statu
     on_webhook_error(error_message);
   }
   on_error(std::move(result));
-  return std::move(error);
+  return error;
 }
 
 td::Result<td::SslStream> WebhookActor::create_ssl_stream() {
diff --git a/telegram-bot-api/telegram-bot-api.cpp b/telegram-bot-api/telegram-bot-api.cpp
index 6b3ef3183..cd4b3b6ed 100644
--- a/telegram-bot-api/telegram-bot-api.cpp
+++ b/telegram-bot-api/telegram-bot-api.cpp
@@ -165,7 +165,7 @@ int main(int argc, char *argv[]) {
   auto start_time = td::Time::now();
   auto shared_data = std::make_shared<SharedData>();
   auto parameters = std::make_unique<ClientParameters>();
-  parameters->version_ = "6.6";
+  parameters->version_ = "6.7.1";
   parameters->shared_data_ = shared_data;
   parameters->start_time_ = start_time;
   auto net_query_stats = td::create_net_query_stats();