diff --git a/td/generate/scheme/td_api.tl b/td/generate/scheme/td_api.tl
index b6985a8fc..9138bba72 100644
--- a/td/generate/scheme/td_api.tl
+++ b/td/generate/scheme/td_api.tl
@@ -9555,6 +9555,9 @@ reorderActiveUsernames usernames:vector<string> = Ok;
 //@description Changes the birthdate of the current user @birthdate The new value of the current user's birthdate; pass null to remove the birthdate
 setBirthdate birthdate:birthdate = Ok;
 
+//@description Changes the personal chat of the current user @chat_id Identifier of the new personal chat; pass 0 to remove the chat. Use getSuitablePersonalChats to get suitable chats
+setPersonalChat chat_id:int53 = Ok;
+
 //@description Changes the emoji status of the current user; for Telegram Premium users only @emoji_status New emoji status; pass null to switch to the default badge
 setEmojiStatus emoji_status:emojiStatus = Ok;
 
diff --git a/td/telegram/ContactsManager.cpp b/td/telegram/ContactsManager.cpp
index 9007b7379..2ec01f438 100644
--- a/td/telegram/ContactsManager.cpp
+++ b/td/telegram/ContactsManager.cpp
@@ -1035,6 +1035,44 @@ class UpdateBirthdayQuery final : public Td::ResultHandler {
   }
 };
 
+class UpdatePersonalChannelQuery final : public Td::ResultHandler {
+  Promise<Unit> promise_;
+
+ public:
+  explicit UpdatePersonalChannelQuery(Promise<Unit> &&promise) : promise_(std::move(promise)) {
+  }
+
+  void send(ChannelId channel_id) {
+    telegram_api::object_ptr<telegram_api::InputChannel> input_channel;
+    if (channel_id == ChannelId()) {
+      input_channel = telegram_api::make_object<telegram_api::inputChannelEmpty>();
+    } else {
+      input_channel = td_->contacts_manager_->get_input_channel(channel_id);
+      CHECK(input_channel != nullptr);
+    }
+    send_query(G()->net_query_creator().create(telegram_api::account_updatePersonalChannel(std::move(input_channel)),
+                                               {{"me"}}));
+  }
+
+  void on_result(BufferSlice packet) final {
+    auto result_ptr = fetch_result<telegram_api::account_updatePersonalChannel>(packet);
+    if (result_ptr.is_error()) {
+      return on_error(result_ptr.move_as_error());
+    }
+
+    LOG(DEBUG) << "Receive result for UpdatePersonalChannelQuery: " << result_ptr.ok();
+    if (result_ptr.ok()) {
+      promise_.set_value(Unit());
+    } else {
+      promise_.set_error(Status::Error(400, "Failed to change personal chat"));
+    }
+  }
+
+  void on_error(Status status) final {
+    promise_.set_error(std::move(status));
+  }
+};
+
 class UpdateEmojiStatusQuery final : public Td::ResultHandler {
   Promise<Unit> promise_;
 
@@ -6393,7 +6431,7 @@ void ContactsManager::set_birthdate(Birthdate &&birthdate, Promise<Unit> &&promi
 void ContactsManager::on_set_birthdate(Birthdate birthdate, Promise<Unit> &&promise) {
   auto my_user_id = get_my_id();
   UserFull *user_full = get_user_full_force(my_user_id, "on_set_birthdate");
-  if (user_full != nullptr) {
+  if (user_full != nullptr && user_full->birthdate != birthdate) {
     user_full->birthdate = std::move(birthdate);
     user_full->is_changed = true;
     update_user_full(user_full, my_user_id, "on_set_birthdate");
@@ -6401,6 +6439,42 @@ void ContactsManager::on_set_birthdate(Birthdate birthdate, Promise<Unit> &&prom
   promise.set_value(Unit());
 }
 
+void ContactsManager::set_personal_channel(DialogId dialog_id, Promise<Unit> &&promise) {
+  ChannelId channel_id;
+  if (dialog_id != DialogId() && !td_->dialog_manager_->have_dialog_force(dialog_id, "set_personal_channel")) {
+    return promise.set_error(Status::Error(400, "Chat not found"));
+  }
+  if (dialog_id != DialogId()) {
+    if (dialog_id.get_type() != DialogType::Channel) {
+      return promise.set_error(Status::Error(400, "Chat can't be set as a personal chat"));
+    }
+    channel_id = dialog_id.get_channel_id();
+    if (!is_suitable_created_public_channel(PublicDialogType::ForPersonalDialog, get_channel(channel_id))) {
+      return promise.set_error(Status::Error(400, "Chat can't be set as a personal chat"));
+    }
+  }
+  auto query_promise = PromiseCreator::lambda(
+      [actor_id = actor_id(this), channel_id, promise = std::move(promise)](Result<Unit> result) mutable {
+        if (result.is_ok()) {
+          send_closure(actor_id, &ContactsManager::on_set_personal_channel, channel_id, std::move(promise));
+        } else {
+          promise.set_error(result.move_as_error());
+        }
+      });
+  td_->create_handler<UpdatePersonalChannelQuery>(std::move(query_promise))->send(channel_id);
+}
+
+void ContactsManager::on_set_personal_channel(ChannelId channel_id, Promise<Unit> &&promise) {
+  auto my_user_id = get_my_id();
+  UserFull *user_full = get_user_full_force(my_user_id, "on_set_personal_channel");
+  if (user_full != nullptr && user_full->personal_channel_id != channel_id) {
+    user_full->personal_channel_id = channel_id;
+    user_full->is_changed = true;
+    update_user_full(user_full, my_user_id, "on_set_personal_channel");
+  }
+  promise.set_value(Unit());
+}
+
 void ContactsManager::set_emoji_status(const EmojiStatus &emoji_status, Promise<Unit> &&promise) {
   if (!td_->option_manager_->get_option_boolean("is_premium")) {
     return promise.set_error(Status::Error(400, "The method is available only to Telegram Premium users"));
diff --git a/td/telegram/ContactsManager.h b/td/telegram/ContactsManager.h
index 54d621628..9117c4f92 100644
--- a/td/telegram/ContactsManager.h
+++ b/td/telegram/ContactsManager.h
@@ -462,6 +462,8 @@ class ContactsManager final : public Actor {
 
   void set_birthdate(Birthdate &&birthdate, Promise<Unit> &&promise);
 
+  void set_personal_channel(DialogId dialog_id, Promise<Unit> &&promise);
+
   void set_emoji_status(const EmojiStatus &emoji_status, Promise<Unit> &&promise);
 
   void set_chat_description(ChatId chat_id, const string &description, Promise<Unit> &&promise);
@@ -1300,6 +1302,8 @@ class ContactsManager final : public Actor {
 
   void on_set_birthdate(Birthdate birthdate, Promise<Unit> &&promise);
 
+  void on_set_personal_channel(ChannelId channel_id, Promise<Unit> &&promise);
+
   void on_set_emoji_status(EmojiStatus emoji_status, Promise<Unit> &&promise);
 
   void on_update_user_name(User *u, UserId user_id, string &&first_name, string &&last_name);
diff --git a/td/telegram/Td.cpp b/td/telegram/Td.cpp
index af450eafd..703224b70 100644
--- a/td/telegram/Td.cpp
+++ b/td/telegram/Td.cpp
@@ -7681,6 +7681,12 @@ void Td::on_request(uint64 id, td_api::setBirthdate &request) {
   contacts_manager_->set_birthdate(Birthdate(std::move(request.birthdate_)), std::move(promise));
 }
 
+void Td::on_request(uint64 id, const td_api::setPersonalChat &request) {
+  CHECK_IS_USER();
+  CREATE_OK_REQUEST_PROMISE();
+  contacts_manager_->set_personal_channel(DialogId(request.chat_id_), std::move(promise));
+}
+
 void Td::on_request(uint64 id, const td_api::setEmojiStatus &request) {
   CHECK_IS_USER();
   CREATE_OK_REQUEST_PROMISE();
diff --git a/td/telegram/Td.h b/td/telegram/Td.h
index 789fc578f..7d1917c46 100644
--- a/td/telegram/Td.h
+++ b/td/telegram/Td.h
@@ -1354,6 +1354,8 @@ class Td final : public Actor {
 
   void on_request(uint64 id, td_api::setBirthdate &request);
 
+  void on_request(uint64 id, const td_api::setPersonalChat &request);
+
   void on_request(uint64 id, const td_api::setEmojiStatus &request);
 
   void on_request(uint64 id, const td_api::getThemedEmojiStatuses &request);
diff --git a/td/telegram/cli.cpp b/td/telegram/cli.cpp
index 95621f4bc..13943149f 100644
--- a/td/telegram/cli.cpp
+++ b/td/telegram/cli.cpp
@@ -5841,6 +5841,10 @@ class CliClient final : public Actor {
         send_request(
             td_api::make_object<td_api::setBirthdate>(td_api::make_object<td_api::birthdate>(day, month, year)));
       }
+    } else if (op == "spec") {
+      ChatId chat_id;
+      get_args(args, chat_id);
+      send_request(td_api::make_object<td_api::setPersonalChat>(chat_id));
     } else if (op == "sese") {
       send_request(td_api::make_object<td_api::setEmojiStatus>(nullptr));
     } else if (op == "ses") {