diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5de2a38..a171a79 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,10 @@
 # Changelog
 All notable changes to this project will be documented in this file.
 
+## [1.6.5]
+### Changed
+- Updated to Telegram Bot API 3.5
+
 ## [1.6.4]
 ### Changed
 - Updated to Telegram Bot API 3.4
diff --git a/composer.json b/composer.json
index b08e267..10b96ec 100644
--- a/composer.json
+++ b/composer.json
@@ -3,7 +3,7 @@
   "description": "Framework for Telegram Bot API",
   "license": "MIT",
   "type": "project",
-  "version": "1.6.4",
+  "version": "1.6.5",
   "authors": [
     {
       "name": "Luca Patera",
diff --git a/readme.md b/readme.md
index cbd1f65..49838e7 100644
--- a/readme.md
+++ b/readme.md
@@ -251,6 +251,6 @@ Changelog
 All notable changes to this project will be documented [here](https://github.com/Lukasss93/telegrambot-php/blob/master/CHANGELOG.md).
 
 ### Recent changes
-## [1.6.4]
+## [1.6.5]
 ### Changed
-- Updated to Telegram Bot API 3.4
+- Updated to Telegram Bot API 3.5
diff --git a/src/TelegramBot.php b/src/TelegramBot.php
index 925af3a..fdb3beb 100644
--- a/src/TelegramBot.php
+++ b/src/TelegramBot.php
@@ -348,6 +348,21 @@ public function sendVideoNote($parameters)
         return $object;
     }
 
+    /**
+     * Use this method to send a group of photos or videos as an album.
+     * On success, an array of the sent Messages is returned.
+     * @param array $parameters
+     * @return Message
+     */
+    public function sendMediaGroup($parameters)
+    {
+        $response = $this->endpoint("sendMediaGroup", $parameters);
+
+        /** @var Message $object */
+        $object = $this->mapper->map($response->result, new Message());
+        return $object;
+    }
+
     /**
      * Use this method to send point on the map. On success, the sent Message is returned.
      * @param array $parameters
@@ -704,11 +719,13 @@ public function setChatDescription($chat_id, $description = null)
     }
 
     /**
-     * Use this method to pin a message in a supergroup.
-     * The bot must be an administrator in the chat for this to work and must have the appropriate admin rights.
+     * Use this method to pin a message in a supergroup or a channel.
+     * The bot must be an administrator in the chat for this to work and must have the ‘can_pin_messages’
+     * admin right in the supergroup or ‘can_edit_messages’ admin right in the channel.
      * Returns True on success.
+     *
      * @param int|string $chat_id Unique identifier for the target chat or username of the target
-     *                                         supergroup (in the format @supergroupusername)
+     *                                         supergroup/channel (in the format [at]username)
      * @param int $message_id Identifier of a message to pin
      * @param bool $disable_notification Pass true, if it is not necessary to send a notification to all group
      *                                         members about the new pinned message
@@ -733,11 +750,12 @@ public function pinChatMessage($chat_id, $message_id, $disable_notification = fa
     }
 
     /**
-     * Use this method to unpin a message in a supergroup chat.
-     * The bot must be an administrator in the chat for this to work and must have the appropriate admin rights.
+     * Use this method to unpin a message in a supergroup or a channel.
+     * The bot must be an administrator in the chat for this to work and must have the ‘can_pin_messages’
+     * admin right in the supergroup or ‘can_edit_messages’ admin right in the channel.
      * Returns True on success.
-     * @param int|string $chat_id Unique identifier for the target chat or username of the target supergroup (in the
-     *                            format @supergroupusername)
+     * @param int|string $chat_id Unique identifier for the target chat or username of the target supergroup/channel (in the
+     *                            format [at]username)
      * @return bool
      */
     public function unpinChatMessage($chat_id)
diff --git a/src/Types/InputMediaPhoto.php b/src/Types/InputMediaPhoto.php
new file mode 100644
index 0000000..0151bc9
--- /dev/null
+++ b/src/Types/InputMediaPhoto.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace TelegramBot\Types;
+
+/**
+ * Represents a photo to be sent.
+ */
+class InputMediaPhoto
+{
+    /** @var string Type of the result, must be photo */
+    public $type;
+
+    /** @var string File to send.
+     * Pass a file_id to send a file that exists on the Telegram servers (recommended),
+     * pass an HTTP URL for Telegram to get a file from the Internet,
+     * or pass "attach://<file_attach_name>" to upload a new one using multipart/form-data under <file_attach_name> name.
+     * More info on Sending Files » https://core.telegram.org/bots/api#sending-files
+     */
+    public $media;
+
+    /** @var string Optional. Caption of the photo to be sent, 0-200 characters */
+    public $caption;
+
+}
\ No newline at end of file
diff --git a/src/Types/InputMediaVideo.php b/src/Types/InputMediaVideo.php
new file mode 100644
index 0000000..a90061d
--- /dev/null
+++ b/src/Types/InputMediaVideo.php
@@ -0,0 +1,32 @@
+<?php
+
+namespace TelegramBot\Types;
+
+/**
+ * Represents a video to be sent.
+ */
+class InputMediaVideo
+{
+    /** @var string Type of the result, must be video */
+    public $type;
+
+    /** @var string File to send.
+     * Pass a file_id to send a file that exists on the Telegram servers (recommended),
+     * pass an HTTP URL for Telegram to get a file from the Internet,
+     * or pass "attach://<file_attach_name>" to upload a new one using multipart/form-data under <file_attach_name> name.
+     * More info on Sending Files » https://core.telegram.org/bots/api#sending-files
+     */
+    public $media;
+
+    /** @var string Optional. Caption of the photo to be sent, 0-200 characters */
+    public $caption;
+
+    /** @var int Optional. Video width */
+    public $width;
+
+    /** @var int Optional. Video height */
+    public $height;
+
+    /** @var int Optional. Video duration */
+    public $duration;
+}
\ No newline at end of file