diff --git a/telebot/__init__.py b/telebot/__init__.py
index 20fdf45..f151195 100644
--- a/telebot/__init__.py
+++ b/telebot/__init__.py
@@ -1239,16 +1239,28 @@ class TeleBot:
         """
         return apihelper.pin_chat_message(self.token, chat_id, message_id, disable_notification)
 
-    def unpin_chat_message(self, chat_id):
+    def unpin_chat_message(self, chat_id, message_id):
         """
-        Use this method to unpin a message in a supergroup chat.
+        Use this method to unpin specific pinned 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.
+        Returns True on success.
+        :param chat_id: Int or Str: Unique identifier for the target chat or username of the target channel
+            (in the format @channelusername)
+        :param message_id: Int: Identifier of a message to unpin
+        :return:
+        """
+        return apihelper.unpin_chat_message(self.token, chat_id)
+
+    def unpin_all_chat_messages(self, chat_id):
+        """
+        Use this method to unpin a all pinned messages in a supergroup chat.
         The bot must be an administrator in the chat for this to work and must have the appropriate admin rights.
         Returns True on success.
         :param chat_id: Int or Str: Unique identifier for the target chat or username of the target channel
             (in the format @channelusername)
         :return:
         """
-        return apihelper.unpin_chat_message(self.token, chat_id)
+        return apihelper.unpin_all_chat_messages(self.token, chat_id, message_id)
 
     def edit_message_text(self, text, chat_id=None, message_id=None, inline_message_id=None, parse_mode=None,
                           disable_web_page_preview=None, reply_markup=None):
@@ -2317,6 +2329,10 @@ class AsyncTeleBot(TeleBot):
     def unpin_chat_message(self, *args):
         return TeleBot.unpin_chat_message(self, *args)
 
+    @util.async_dec()
+    def unpin_all_chat_messages(self, *args):
+        return TeleBot.unpin_all_chat_messages(self, *args)
+
     @util.async_dec()
     def edit_message_text(self, *args, **kwargs):
         return TeleBot.edit_message_text(self, *args, **kwargs)
diff --git a/telebot/apihelper.py b/telebot/apihelper.py
index 3bc6d35..b43d341 100644
--- a/telebot/apihelper.py
+++ b/telebot/apihelper.py
@@ -830,8 +830,14 @@ def pin_chat_message(token, chat_id, message_id, disable_notification=None):
     return _make_request(token, method_url, params=payload, method='post')
 
 
-def unpin_chat_message(token, chat_id):
+def unpin_chat_message(token, chat_id, message_id):
     method_url = 'unpinChatMessage'
+    payload = {'chat_id': chat_id, 'message_id': message_id}
+    return _make_request(token, method_url, params=payload, method='post')
+
+
+def unpin_all_chat_messages(token, chat_id):
+    method_url = 'unpinAllChatMessages'
     payload = {'chat_id': chat_id}
     return _make_request(token, method_url, params=payload, method='post')