diff --git a/composer.json b/composer.json
index d318b2c..9655419 100644
--- a/composer.json
+++ b/composer.json
@@ -41,7 +41,7 @@
     "sort-packages": true
   },
   "scripts": {
-    "analyse": "vendor/bin/phpstan analyse -c phpstan.neon",
+    "analyse": "vendor/bin/phpstan analyse -c phpstan.neon --memory-limit=256M",
     "format": "vendor/bin/php-cs-fixer fix --allow-risky=yes src",
     "test": "vendor/bin/phpunit",
     "test-coverage": "vendor/bin/phpunit --coverage-html coverage"
diff --git a/src/Api.php b/src/Api.php
index ebe4197..ae79395 100644
--- a/src/Api.php
+++ b/src/Api.php
@@ -68,10 +68,12 @@ class Api
     ) {
         if ($client === null) {
             if (!class_exists(\GuzzleHttp\Client::class) || !class_exists(\GuzzleHttp\Psr7\HttpFactory::class)) {
+                // @codeCoverageIgnoreStart
                 throw new LogicException(
                     'No client was provided and "guzzlehttp/guzzle" is not found. ' .
                     'Please run "composer require guzzlehttp/guzzle" or create and pass your own implementation of ClientApiInterface.'
                 );
+                // @codeCoverageIgnoreEnd
             }
 
             $guzzle = new \GuzzleHttp\Client();
diff --git a/src/ModelFactory.php b/src/ModelFactory.php
index b6b7b86..a102795 100644
--- a/src/ModelFactory.php
+++ b/src/ModelFactory.php
@@ -12,8 +12,12 @@ use BushlanovDev\MaxMessengerBot\Models\Result;
 use BushlanovDev\MaxMessengerBot\Models\Subscription;
 use BushlanovDev\MaxMessengerBot\Models\UpdateList;
 use BushlanovDev\MaxMessengerBot\Models\Updates\AbstractUpdate;
+use BushlanovDev\MaxMessengerBot\Models\Updates\BotAddedToChatUpdate;
 use BushlanovDev\MaxMessengerBot\Models\Updates\BotStartedUpdate;
+use BushlanovDev\MaxMessengerBot\Models\Updates\MessageCallbackUpdate;
 use BushlanovDev\MaxMessengerBot\Models\Updates\MessageCreatedUpdate;
+use BushlanovDev\MaxMessengerBot\Models\Updates\MessageEditedUpdate;
+use BushlanovDev\MaxMessengerBot\Models\Updates\MessageRemovedUpdate;
 use BushlanovDev\MaxMessengerBot\Models\UploadEndpoint;
 use LogicException;
 use ReflectionException;
@@ -154,6 +158,10 @@ class ModelFactory
     {
         return match (UpdateType::tryFrom($data['update_type'] ?? '')) {
             UpdateType::MessageCreated => MessageCreatedUpdate::fromArray($data),
+            UpdateType::MessageCallback => MessageCallbackUpdate::fromArray($data),
+            UpdateType::MessageEdited => MessageEditedUpdate::fromArray($data),
+            UpdateType::MessageRemoved => MessageRemovedUpdate::fromArray($data),
+            UpdateType::BotAdded => BotAddedToChatUpdate::fromArray($data),
             UpdateType::BotStarted => BotStartedUpdate::fromArray($data),
             default => throw new LogicException(
                 'Unknown or unsupported update type received: ' . ($data['update_type'] ?? 'none')
diff --git a/src/Models/Callback.php b/src/Models/Callback.php
new file mode 100644
index 0000000..82e8ba2
--- /dev/null
+++ b/src/Models/Callback.php
@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BushlanovDev\MaxMessengerBot\Models;
+
+/**
+ * Object sent to bot when user presses a callback button.
+ */
+final readonly class Callback extends AbstractModel
+{
+    /**
+     * @param int $timestamp Unix-time when user pressed the button.
+     * @param string $callbackId Identifier of the callback, unique for the message.
+     * @param string $payload Payload from the pressed button.
+     * @param User $user User who pressed the button.
+     */
+    public function __construct(
+        public int $timestamp,
+        public string $callbackId,
+        public string $payload,
+        public User $user,
+    ) {
+    }
+}
diff --git a/src/Models/Updates/BotAddedToChatUpdate.php b/src/Models/Updates/BotAddedToChatUpdate.php
new file mode 100644
index 0000000..364a214
--- /dev/null
+++ b/src/Models/Updates/BotAddedToChatUpdate.php
@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BushlanovDev\MaxMessengerBot\Models\Updates;
+
+use BushlanovDev\MaxMessengerBot\Enums\UpdateType;
+use BushlanovDev\MaxMessengerBot\Models\User;
+
+/**
+ * You will receive this update when the bot has been added to a chat.
+ */
+final readonly class BotAddedToChatUpdate extends AbstractUpdate
+{
+    /**
+     * @param int $timestamp Unix-time when the event has occurred.
+     * @param int $chatId Chat ID where the bot was added.
+     * @param User $user User who added the bot to the chat.
+     * @param bool $isChannel Indicates whether the bot has been added to a channel or not.
+     */
+    public function __construct(
+        int $timestamp,
+        public int $chatId,
+        public User $user,
+        public bool $isChannel,
+    ) {
+        parent::__construct(UpdateType::BotAdded, $timestamp);
+    }
+}
diff --git a/src/Models/Updates/MessageCallbackUpdate.php b/src/Models/Updates/MessageCallbackUpdate.php
new file mode 100644
index 0000000..b5c6797
--- /dev/null
+++ b/src/Models/Updates/MessageCallbackUpdate.php
@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BushlanovDev\MaxMessengerBot\Models\Updates;
+
+use BushlanovDev\MaxMessengerBot\Enums\UpdateType;
+use BushlanovDev\MaxMessengerBot\Models\Callback;
+use BushlanovDev\MaxMessengerBot\Models\Message;
+
+/**
+ * You will get this update as soon as a user presses a callback button.
+ */
+final readonly class MessageCallbackUpdate extends AbstractUpdate
+{
+    /**
+     * @param int $timestamp Unix-time when event has occurred.
+     * @param Callback $callback The callback query itself.
+     * @param Message|null $message Original message with the inline keyboard. Can be null if the message was deleted.
+     * @param string|null $userLocale Current user locale in IETF BCP 47 format.
+     */
+    public function __construct(
+        int $timestamp,
+        public Callback $callback,
+        public ?Message $message,
+        public ?string $userLocale,
+    ) {
+        parent::__construct(UpdateType::MessageCallback, $timestamp);
+    }
+}
diff --git a/src/Models/Updates/MessageEditedUpdate.php b/src/Models/Updates/MessageEditedUpdate.php
new file mode 100644
index 0000000..fbf0cee
--- /dev/null
+++ b/src/Models/Updates/MessageEditedUpdate.php
@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BushlanovDev\MaxMessengerBot\Models\Updates;
+
+use BushlanovDev\MaxMessengerBot\Enums\UpdateType;
+use BushlanovDev\MaxMessengerBot\Models\Message;
+
+/**
+ * You will get this update as soon as a message is edited.
+ */
+final readonly class MessageEditedUpdate extends AbstractUpdate
+{
+    /**
+     * @param int $timestamp Unix-time when the event has occurred.
+     * @param Message $message The edited message.
+     */
+    public function __construct(
+        int $timestamp,
+        public Message $message,
+    ) {
+        parent::__construct(UpdateType::MessageEdited, $timestamp);
+    }
+}
diff --git a/src/Models/Updates/MessageRemovedUpdate.php b/src/Models/Updates/MessageRemovedUpdate.php
new file mode 100644
index 0000000..a5d5f10
--- /dev/null
+++ b/src/Models/Updates/MessageRemovedUpdate.php
@@ -0,0 +1,28 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BushlanovDev\MaxMessengerBot\Models\Updates;
+
+use BushlanovDev\MaxMessengerBot\Enums\UpdateType;
+
+/**
+ * You will get this update as soon as a message is removed.
+ */
+final readonly class MessageRemovedUpdate extends AbstractUpdate
+{
+    /**
+     * @param int $timestamp Unix-time when the event has occurred.
+     * @param string $messageId Identifier of the removed message.
+     * @param int $chatId Chat identifier where the message has been deleted.
+     * @param int $userId User who deleted this message.
+     */
+    public function __construct(
+        int $timestamp,
+        public string $messageId,
+        public int $chatId,
+        public int $userId,
+    ) {
+        parent::__construct(UpdateType::MessageRemoved, $timestamp);
+    }
+}
diff --git a/src/WebhookHandler.php b/src/WebhookHandler.php
index ce65522..8c04228 100644
--- a/src/WebhookHandler.php
+++ b/src/WebhookHandler.php
@@ -62,6 +62,57 @@ final class WebhookHandler
         return $this->addHandler(UpdateType::MessageCreated, $handler);
     }
 
+    /**
+     * A convenient alias for addHandler(UpdateType::MessageCallback, $handler).
+     *
+     * @param callable(Models\Updates\MessageCallbackUpdate, Api): void $handler
+     *
+     * @return $this
+     * @codeCoverageIgnore
+     */
+    public function onMessageCallback(callable $handler): self
+    {
+        return $this->addHandler(UpdateType::MessageCallback, $handler);
+    }
+
+    /**
+     * A convenient alias for addHandler(UpdateType::MessageEdited, $handler).
+     *
+     * @param callable(Models\Updates\MessageEditedUpdate, Api): void $handler
+     *
+     * @return $this
+     * @codeCoverageIgnore
+     */
+    public function onMessageEdited(callable $handler): self
+    {
+        return $this->addHandler(UpdateType::MessageEdited, $handler);
+    }
+
+    /**
+     * A convenient alias for addHandler(UpdateType::MessageRemoved, $handler).
+     *
+     * @param callable(Models\Updates\MessageRemovedUpdate, Api): void $handler
+     *
+     * @return $this
+     * @codeCoverageIgnore
+     */
+    public function onMessageRemoved(callable $handler): self
+    {
+        return $this->addHandler(UpdateType::MessageRemoved, $handler);
+    }
+    /**
+     * A convenient alias for addHandler(UpdateType::BotAdded, $handler).
+     *
+     * @param callable(Models\Updates\BotAddedToChatUpdate, Api): void $handler
+     *
+     * @return $this
+     * @codeCoverageIgnore
+     */
+    public function onBotAdded(callable $handler): self
+    {
+        return $this->addHandler(UpdateType::BotAdded, $handler);
+    }
+
     /**
      * A convenient alias for addHandler(UpdateType::BotStarted, $handler).
      *
@@ -92,10 +143,12 @@ final class WebhookHandler
     {
         if ($request === null) {
             if (!class_exists(\GuzzleHttp\Psr7\ServerRequest::class)) {
+                // @codeCoverageIgnoreStart
                 throw new \LogicException(
                     'No ServerRequest was provided and "guzzlehttp/psr7" is not found. ' .
                     'Please run "composer require guzzlehttp/psr7" or create and pass your own PSR-7 request object.',
                 );
+                // @codeCoverageIgnoreEnd
             }
             $request = \GuzzleHttp\Psr7\ServerRequest::fromGlobals();
         }
diff --git a/tests/Models/CallbackTest.php b/tests/Models/CallbackTest.php
new file mode 100644
index 0000000..cd13619
--- /dev/null
+++ b/tests/Models/CallbackTest.php
@@ -0,0 +1,48 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BushlanovDev\MaxMessengerBot\Tests\Models;
+
+use BushlanovDev\MaxMessengerBot\Models\Callback;
+use BushlanovDev\MaxMessengerBot\Models\User;
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\Attributes\Test;
+use PHPUnit\Framework\Attributes\UsesClass;
+use PHPUnit\Framework\TestCase;
+
+#[CoversClass(Callback::class)]
+#[UsesClass(User::class)]
+final class CallbackTest extends TestCase
+{
+    #[Test]
+    public function canBeCreatedFromArray(): void
+    {
+        $data = [
+            'timestamp' => 1678886400,
+            'callback_id' => 'cb.12345.abc',
+            'payload' => 'button_1_pressed',
+            'user' => [
+                'user_id' => 101,
+                'first_name' => 'Jane',
+                'is_bot' => false,
+                'last_activity_time' => 1678886000,
+                'last_name' => null,
+                'username' => null,
+                'description' => null,
+                'avatar_url' => null,
+                'full_avatar_url' => null,
+            ],
+        ];
+
+        $callback = Callback::fromArray($data);
+
+        $this->assertInstanceOf(Callback::class, $callback);
+        $this->assertSame(1678886400, $callback->timestamp);
+        $this->assertSame('cb.12345.abc', $callback->callbackId);
+        $this->assertSame('button_1_pressed', $callback->payload);
+        $this->assertInstanceOf(User::class, $callback->user);
+        $this->assertSame(101, $callback->user->userId);
+        $this->assertEquals($data, $callback->toArray());
+    }
+}
diff --git a/tests/Models/Updates/BotAddedToChatUpdateTest.php b/tests/Models/Updates/BotAddedToChatUpdateTest.php
new file mode 100644
index 0000000..8e61c7a
--- /dev/null
+++ b/tests/Models/Updates/BotAddedToChatUpdateTest.php
@@ -0,0 +1,74 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BushlanovDev\MaxMessengerBot\Tests\Models\Updates;
+
+use BushlanovDev\MaxMessengerBot\Enums\UpdateType;
+use BushlanovDev\MaxMessengerBot\Models\Updates\BotAddedToChatUpdate;
+use BushlanovDev\MaxMessengerBot\Models\User;
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\Attributes\Test;
+use PHPUnit\Framework\Attributes\UsesClass;
+use PHPUnit\Framework\TestCase;
+
+#[CoversClass(BotAddedToChatUpdate::class)]
+#[UsesClass(User::class)]
+final class BotAddedToChatUpdateTest extends TestCase
+{
+    #[Test]
+    public function canBeCreatedFromArrayAndSerialized(): void
+    {
+        $data = [
+            'update_type' => 'bot_added',
+            'timestamp' => 1679000000,
+            'chat_id' => 987654321,
+            'user' => [
+                'user_id' => 101,
+                'first_name' => 'Admin',
+                'is_bot' => false,
+                'last_activity_time' => 1678000000,
+                'last_name' => null,
+                'username' => null,
+                'description' => null,
+                'avatar_url' => null,
+                'full_avatar_url' => null,
+            ],
+            'is_channel' => false,
+        ];
+
+        $update = BotAddedToChatUpdate::fromArray($data);
+
+        $this->assertInstanceOf(BotAddedToChatUpdate::class, $update);
+        $this->assertSame(UpdateType::BotAdded, $update->updateType);
+        $this->assertSame(1679000000, $update->timestamp);
+        $this->assertSame(987654321, $update->chatId);
+        $this->assertFalse($update->isChannel);
+        $this->assertInstanceOf(User::class, $update->user);
+        $this->assertSame(101, $update->user->userId);
+        $this->assertEquals($data, $update->toArray());
+    }
+
+    #[Test]
+    public function canBeCreatedForChannel(): void
+    {
+        $data = [
+            'update_type' => 'bot_added',
+            'timestamp' => 1679000001,
+            'chat_id' => 111222333,
+            'user' => [
+                'user_id' => 102,
+                'first_name' => 'ChannelCreator',
+                'is_bot' => false,
+                'last_activity_time' => 1678000001,
+            ],
+            'is_channel' => true,
+        ];
+
+        $update = BotAddedToChatUpdate::fromArray($data);
+
+        $this->assertInstanceOf(BotAddedToChatUpdate::class, $update);
+        $this->assertTrue($update->isChannel);
+        $this->assertSame(111222333, $update->chatId);
+    }
+}
diff --git a/tests/Models/Updates/MessageCallbackUpdateTest.php b/tests/Models/Updates/MessageCallbackUpdateTest.php
new file mode 100644
index 0000000..0b7fb8f
--- /dev/null
+++ b/tests/Models/Updates/MessageCallbackUpdateTest.php
@@ -0,0 +1,86 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BushlanovDev\MaxMessengerBot\Tests\Models\Updates;
+
+use BushlanovDev\MaxMessengerBot\Enums\UpdateType;
+use BushlanovDev\MaxMessengerBot\Models\Callback;
+use BushlanovDev\MaxMessengerBot\Models\Message;
+use BushlanovDev\MaxMessengerBot\Models\MessageBody;
+use BushlanovDev\MaxMessengerBot\Models\Recipient;
+use BushlanovDev\MaxMessengerBot\Models\Updates\MessageCallbackUpdate;
+use BushlanovDev\MaxMessengerBot\Models\User;
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\Attributes\Test;
+use PHPUnit\Framework\Attributes\UsesClass;
+use PHPUnit\Framework\TestCase;
+
+#[CoversClass(MessageCallbackUpdate::class)]
+#[UsesClass(Callback::class)]
+#[UsesClass(Message::class)]
+#[UsesClass(MessageBody::class)]
+#[UsesClass(Recipient::class)]
+#[UsesClass(User::class)]
+final class MessageCallbackUpdateTest extends TestCase
+{
+    #[Test]
+    public function canBeCreatedFromArrayWithAllData(): void
+    {
+        $data = [
+            'update_type' => 'message_callback',
+            'timestamp' => 1678886400,
+            'callback' => [
+                'timestamp' => 1678886400,
+                'callback_id' => 'cb.12345.abc',
+                'payload' => 'button_1_pressed',
+                'user' => [
+                    'user_id' => 101, 'first_name' => 'Jane',
+                    'is_bot' => false, 'last_activity_time' => 1678886000,
+                ],
+            ],
+            'message' => [
+                'timestamp' => 1678886300,
+                'body' => ['mid' => 'mid.123', 'seq' => 1, 'text' => 'Press a button'],
+                'recipient' => ['chat_type' => 'dialog', 'user_id' => 101],
+            ],
+            'user_locale' => 'en-US',
+        ];
+
+        $update = MessageCallbackUpdate::fromArray($data);
+
+        $this->assertInstanceOf(MessageCallbackUpdate::class, $update);
+        $this->assertSame(UpdateType::MessageCallback, $update->updateType);
+        $this->assertInstanceOf(Callback::class, $update->callback);
+        $this->assertInstanceOf(Message::class, $update->message);
+        $this->assertSame('en-US', $update->userLocale);
+        $this->assertSame('button_1_pressed', $update->callback->payload);
+        $this->assertSame('mid.123', $update->message->body->mid);
+    }
+
+    #[Test]
+    public function canBeCreatedWithNullableFieldsAsNull(): void
+    {
+        $data = [
+            'update_type' => 'message_callback',
+            'timestamp' => 1678886400,
+            'callback' => [
+                'timestamp' => 1678886400,
+                'callback_id' => 'cb.12345.abc',
+                'payload' => 'button_1_pressed',
+                'user' => [
+                    'user_id' => 101, 'first_name' => 'Jane',
+                    'is_bot' => false, 'last_activity_time' => 1678886000,
+                ],
+            ],
+            'message' => null,
+            'user_locale' => null,
+        ];
+
+        $update = MessageCallbackUpdate::fromArray($data);
+
+        $this->assertInstanceOf(MessageCallbackUpdate::class, $update);
+        $this->assertNull($update->message);
+        $this->assertNull($update->userLocale);
+    }
+}
diff --git a/tests/Models/Updates/MessageEditedUpdateTest.php b/tests/Models/Updates/MessageEditedUpdateTest.php
new file mode 100644
index 0000000..97ccc8d
--- /dev/null
+++ b/tests/Models/Updates/MessageEditedUpdateTest.php
@@ -0,0 +1,57 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BushlanovDev\MaxMessengerBot\Tests\Models\Updates;
+
+use BushlanovDev\MaxMessengerBot\Enums\UpdateType;
+use BushlanovDev\MaxMessengerBot\Models\Message;
+use BushlanovDev\MaxMessengerBot\Models\MessageBody;
+use BushlanovDev\MaxMessengerBot\Models\Recipient;
+use BushlanovDev\MaxMessengerBot\Models\Sender;
+use BushlanovDev\MaxMessengerBot\Models\Updates\MessageEditedUpdate;
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\Attributes\Test;
+use PHPUnit\Framework\Attributes\UsesClass;
+use PHPUnit\Framework\TestCase;
+
+#[CoversClass(MessageEditedUpdate::class)]
+#[UsesClass(Message::class)]
+#[UsesClass(MessageBody::class)]
+#[UsesClass(Recipient::class)]
+#[UsesClass(Sender::class)]
+final class MessageEditedUpdateTest extends TestCase
+{
+    #[Test]
+    public function canBeCreatedFromArray(): void
+    {
+        $data = [
+            'update_type' => 'message_edited',
+            'timestamp' => 1678887000,
+            'message' => [
+                'timestamp' => 1678886300,
+                'body' => [
+                    'mid' => 'mid.123.xyz',
+                    'seq' => 1,
+                    'text' => 'This is the new, edited text!',
+                ],
+                'recipient' => ['chat_type' => 'dialog', 'user_id' => 101],
+                'sender' => [
+                    'user_id' => 101,
+                    'first_name' => 'Jane',
+                    'is_bot' => false,
+                    'last_activity_time' => 1678886000,
+                ],
+            ],
+        ];
+
+        $update = MessageEditedUpdate::fromArray($data);
+
+        $this->assertInstanceOf(MessageEditedUpdate::class, $update);
+        $this->assertSame(UpdateType::MessageEdited, $update->updateType);
+        $this->assertSame(1678887000, $update->timestamp);
+        $this->assertInstanceOf(Message::class, $update->message);
+        $this->assertSame('This is the new, edited text!', $update->message->body->text);
+        $this->assertSame('mid.123.xyz', $update->message->body->mid);
+    }
+}
diff --git a/tests/Models/Updates/MessageRemovedUpdateTest.php b/tests/Models/Updates/MessageRemovedUpdateTest.php
new file mode 100644
index 0000000..80e1116
--- /dev/null
+++ b/tests/Models/Updates/MessageRemovedUpdateTest.php
@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BushlanovDev\MaxMessengerBot\Tests\Models\Updates;
+
+use BushlanovDev\MaxMessengerBot\Enums\UpdateType;
+use BushlanovDev\MaxMessengerBot\Models\Updates\MessageRemovedUpdate;
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\Attributes\Test;
+use PHPUnit\Framework\TestCase;
+
+#[CoversClass(MessageRemovedUpdate::class)]
+final class MessageRemovedUpdateTest extends TestCase
+{
+    #[Test]
+    public function canBeCreatedFromArrayAndSerializedBack(): void
+    {
+        $data = [
+            'update_type' => 'message_removed',
+            'timestamp' => 1678888000,
+            'message_id' => 'mid.was.here.now.gone',
+            'chat_id' => 123456789,
+            'user_id' => 98765,
+        ];
+
+        $update = MessageRemovedUpdate::fromArray($data);
+
+        $this->assertInstanceOf(MessageRemovedUpdate::class, $update);
+        $this->assertSame(UpdateType::MessageRemoved, $update->updateType);
+        $this->assertSame(1678888000, $update->timestamp);
+        $this->assertSame('mid.was.here.now.gone', $update->messageId);
+        $this->assertSame(123456789, $update->chatId);
+        $this->assertSame(98765, $update->userId);
+        $this->assertEquals($data, $update->toArray());
+    }
+}