diff --git a/README.md b/README.md
index 3ec1f740..9e2688df 100644
--- a/README.md
+++ b/README.md
@@ -9,12 +9,28 @@ Documentation is located [here](http://reo7sp.github.io/tgbot-cpp).
 
 ## State
 
-- [x] Telegram Bot API 7.2
-- [ ] [MaybeInaccessibleMessage](https://core.telegram.org/bots/api#maybeinaccessiblemessage)
-- [ ] [Message->pinnedMessage](https://core.telegram.org/bots/api#message)
-- [ ] [CallbackQuery->message](https://core.telegram.org/bots/api#callbackquery)
+This library implements most features from **Telegram Bot API 7.2** with additional features from later versions.
+
+### Recently Added Features:
+- [x] Message Reactions (Bot API 7.x+)
+  - MessageReactionUpdated event handling
+  - MessageReactionCountUpdated event handling
+- [x] Business Account Integration (Bot API 7.x+)
+  - BusinessConnection updates
+  - Business message handling
+  - Deleted business messages tracking
+- [x] Chat Boosts (Bot API 7.x+)
+  - ChatBoostUpdated events
+  - ChatBoostRemoved events
+
+### Known Limitations:
+- [ ] [MaybeInaccessibleMessage](https://core.telegram.org/bots/api#maybeinaccessiblemessage) - Planned for future implementation
+- [ ] [Message->pinnedMessage](https://core.telegram.org/bots/api#message) - Requires MaybeInaccessibleMessage
+- [ ] [CallbackQuery->message](https://core.telegram.org/bots/api#callbackquery) - Requires MaybeInaccessibleMessage
 - [ ] [Deep Linking](https://core.telegram.org/bots/features#deep-linking)
 
+**Note:** Full Bot API 8.x and 9.x support is planned. Contributions are welcome!
+
 
 ## Sample
 
diff --git a/include/tgbot/EventBroadcaster.h b/include/tgbot/EventBroadcaster.h
index 8773f353..5fc03553 100644
--- a/include/tgbot/EventBroadcaster.h
+++ b/include/tgbot/EventBroadcaster.h
@@ -12,6 +12,12 @@
 #include "tgbot/types/PollAnswer.h"
 #include "tgbot/types/ChatMemberUpdated.h"
 #include "tgbot/types/ChatJoinRequest.h"
+#include "tgbot/types/MessageReactionUpdated.h"
+#include "tgbot/types/MessageReactionCountUpdated.h"
+#include "tgbot/types/BusinessConnection.h"
+#include "tgbot/types/BusinessMessagesDeleted.h"
+#include "tgbot/types/ChatBoostUpdated.h"
+#include "tgbot/types/ChatBoostRemoved.h"
 
 #include <functional>
 #include <initializer_list>
@@ -43,6 +49,12 @@ friend EventHandler;
     typedef std::function<void (const PollAnswer::Ptr)> PollAnswerListener;
     typedef std::function<void (const ChatMemberUpdated::Ptr)> ChatMemberUpdatedListener;
     typedef std::function<void (const ChatJoinRequest::Ptr)> ChatJoinRequestListener;
+    typedef std::function<void (const MessageReactionUpdated::Ptr)> MessageReactionUpdatedListener;
+    typedef std::function<void (const MessageReactionCountUpdated::Ptr)> MessageReactionCountUpdatedListener;
+    typedef std::function<void (const BusinessConnection::Ptr)> BusinessConnectionListener;
+    typedef std::function<void (const BusinessMessagesDeleted::Ptr)> BusinessMessagesDeletedListener;
+    typedef std::function<void (const ChatBoostUpdated::Ptr)> ChatBoostUpdatedListener;
+    typedef std::function<void (const ChatBoostRemoved::Ptr)> ChatBoostRemovedListener;
 
     /**
      * @brief Registers listener which receives new incoming message of any kind - text, photo, sticker, etc.
@@ -202,6 +214,101 @@ friend EventHandler;
         _onChatJoinRequestListeners.push_back(listener);
     }
 
+    /**
+     * @brief Registers listener which receives message reaction updates.
+     * 
+     * The bot must be an administrator in the chat and must explicitly specify
+     * "message_reaction" in the list of allowedUpdates to receive these updates.
+     * The update isn't received for reactions set by bots.
+     * 
+     * @param listener Listener.
+     */
+    inline void onMessageReaction(const MessageReactionUpdatedListener& listener){
+        _onMessageReactionUpdatedListeners.push_back(listener);
+    }
+
+    /**
+     * @brief Registers listener which receives message reaction count updates.
+     * 
+     * The bot must be an administrator in the chat and must explicitly specify
+     * "message_reaction_count" in the list of allowedUpdates to receive these updates.
+     * The updates are grouped and can be sent with delay up to a few minutes.
+     * 
+     * @param listener Listener.
+     */
+    inline void onMessageReactionCount(const MessageReactionCountUpdatedListener& listener){
+        _onMessageReactionCountUpdatedListeners.push_back(listener);
+    }
+
+    /**
+     * @brief Registers listener which receives business connection updates.
+     * 
+     * The bot was connected to or disconnected from a business account,
+     * or a user edited an existing connection with the bot.
+     * 
+     * @param listener Listener.
+     */
+    inline void onBusinessConnection(const BusinessConnectionListener& listener){
+        _onBusinessConnectionListeners.push_back(listener);
+    }
+
+    /**
+     * @brief Registers listener which receives business message updates.
+     * 
+     * New non-service message from a connected business account.
+     * 
+     * @param listener Listener.
+     */
+    inline void onBusinessMessage(const MessageListener& listener){
+        _onBusinessMessageListeners.push_back(listener);
+    }
+
+    /**
+     * @brief Registers listener which receives edited business message updates.
+     * 
+     * New version of a message from a connected business account.
+     * 
+     * @param listener Listener.
+     */
+    inline void onEditedBusinessMessage(const MessageListener& listener){
+        _onEditedBusinessMessageListeners.push_back(listener);
+    }
+
+    /**
+     * @brief Registers listener which receives business messages deleted updates.
+     * 
+     * Messages were deleted from a connected business account.
+     * 
+     * @param listener Listener.
+     */
+    inline void onDeletedBusinessMessages(const BusinessMessagesDeletedListener& listener){
+        _onDeletedBusinessMessagesListeners.push_back(listener);
+    }
+
+    /**
+     * @brief Registers listener which receives chat boost updates.
+     * 
+     * A chat boost was added or changed. The bot must be an administrator
+     * in the chat to receive these updates.
+     * 
+     * @param listener Listener.
+     */
+    inline void onChatBoost(const ChatBoostUpdatedListener& listener){
+        _onChatBoostUpdatedListeners.push_back(listener);
+    }
+
+    /**
+     * @brief Registers listener which receives removed chat boost updates.
+     * 
+     * A boost was removed from a chat. The bot must be an administrator
+     * in the chat to receive these updates.
+     * 
+     * @param listener Listener.
+     */
+    inline void onRemovedChatBoost(const ChatBoostRemovedListener& listener){
+        _onRemovedChatBoostListeners.push_back(listener);
+    }
+
 private:
     template<typename ListenerType, typename ObjectType>
     inline void broadcast(const std::vector<ListenerType>& listeners, const ObjectType object) const {
@@ -278,6 +385,38 @@ friend EventHandler;
         broadcast<ChatJoinRequestListener, ChatJoinRequest::Ptr>(_onChatJoinRequestListeners, result);
     }
 
+    inline void broadcastMessageReactionUpdated(const MessageReactionUpdated::Ptr& result) const {
+        broadcast<MessageReactionUpdatedListener, MessageReactionUpdated::Ptr>(_onMessageReactionUpdatedListeners, result);
+    }
+
+    inline void broadcastMessageReactionCountUpdated(const MessageReactionCountUpdated::Ptr& result) const {
+        broadcast<MessageReactionCountUpdatedListener, MessageReactionCountUpdated::Ptr>(_onMessageReactionCountUpdatedListeners, result);
+    }
+
+    inline void broadcastBusinessConnection(const BusinessConnection::Ptr& result) const {
+        broadcast<BusinessConnectionListener, BusinessConnection::Ptr>(_onBusinessConnectionListeners, result);
+    }
+
+    inline void broadcastBusinessMessage(const Message::Ptr& message) const {
+        broadcast<MessageListener, Message::Ptr>(_onBusinessMessageListeners, message);
+    }
+
+    inline void broadcastEditedBusinessMessage(const Message::Ptr& message) const {
+        broadcast<MessageListener, Message::Ptr>(_onEditedBusinessMessageListeners, message);
+    }
+
+    inline void broadcastDeletedBusinessMessages(const BusinessMessagesDeleted::Ptr& result) const {
+        broadcast<BusinessMessagesDeletedListener, BusinessMessagesDeleted::Ptr>(_onDeletedBusinessMessagesListeners, result);
+    }
+
+    inline void broadcastChatBoostUpdated(const ChatBoostUpdated::Ptr& result) const {
+        broadcast<ChatBoostUpdatedListener, ChatBoostUpdated::Ptr>(_onChatBoostUpdatedListeners, result);
+    }
+
+    inline void broadcastRemovedChatBoost(const ChatBoostRemoved::Ptr& result) const {
+        broadcast<ChatBoostRemovedListener, ChatBoostRemoved::Ptr>(_onRemovedChatBoostListeners, result);
+    }
+
     std::vector<MessageListener> _onAnyMessageListeners;
     std::unordered_map<std::string, MessageListener> _onCommandListeners;
     std::vector<MessageListener> _onUnknownCommandListeners;
@@ -293,6 +432,14 @@ friend EventHandler;
     std::vector<ChatMemberUpdatedListener> _onMyChatMemberListeners;
     std::vector<ChatMemberUpdatedListener> _onChatMemberListeners;
     std::vector<ChatJoinRequestListener> _onChatJoinRequestListeners;
+    std::vector<MessageReactionUpdatedListener> _onMessageReactionUpdatedListeners;
+    std::vector<MessageReactionCountUpdatedListener> _onMessageReactionCountUpdatedListeners;
+    std::vector<BusinessConnectionListener> _onBusinessConnectionListeners;
+    std::vector<MessageListener> _onBusinessMessageListeners;
+    std::vector<MessageListener> _onEditedBusinessMessageListeners;
+    std::vector<BusinessMessagesDeletedListener> _onDeletedBusinessMessagesListeners;
+    std::vector<ChatBoostUpdatedListener> _onChatBoostUpdatedListeners;
+    std::vector<ChatBoostRemovedListener> _onRemovedChatBoostListeners;
 };
 
 }
diff --git a/src/EventHandler.cpp b/src/EventHandler.cpp
index 3bfb7d39..06f930f6 100644
--- a/src/EventHandler.cpp
+++ b/src/EventHandler.cpp
@@ -16,6 +16,24 @@ void EventHandler::handleUpdate(const Update::Ptr& update) const {
     if (update->editedChannelPost != nullptr) {
         _broadcaster->broadcastEditedMessage(update->editedChannelPost);
     }
+    if (update->businessConnection != nullptr) {
+        _broadcaster->broadcastBusinessConnection(update->businessConnection);
+    }
+    if (update->businessMessage != nullptr) {
+        _broadcaster->broadcastBusinessMessage(update->businessMessage);
+    }
+    if (update->editedBusinessMessage != nullptr) {
+        _broadcaster->broadcastEditedBusinessMessage(update->editedBusinessMessage);
+    }
+    if (update->deletedBusinessMessages != nullptr) {
+        _broadcaster->broadcastDeletedBusinessMessages(update->deletedBusinessMessages);
+    }
+    if (update->messageReaction != nullptr) {
+        _broadcaster->broadcastMessageReactionUpdated(update->messageReaction);
+    }
+    if (update->messageReactionCount != nullptr) {
+        _broadcaster->broadcastMessageReactionCountUpdated(update->messageReactionCount);
+    }
     if (update->inlineQuery != nullptr) {
         _broadcaster->broadcastInlineQuery(update->inlineQuery);
     }
@@ -46,6 +64,12 @@ void EventHandler::handleUpdate(const Update::Ptr& update) const {
     if (update->chatJoinRequest != nullptr) {
         _broadcaster->broadcastChatJoinRequest(update->chatJoinRequest);
     }
+    if (update->chatBoost != nullptr) {
+        _broadcaster->broadcastChatBoostUpdated(update->chatBoost);
+    }
+    if (update->removedChatBoost != nullptr) {
+        _broadcaster->broadcastRemovedChatBoost(update->removedChatBoost);
+    }
 }
 
 void EventHandler::handleMessage(const Message::Ptr& message) const {