diff --git a/fbchat/client.py b/fbchat/client.py
index 24b4941..6040244 100644
--- a/fbchat/client.py
+++ b/fbchat/client.py
@@ -962,6 +962,7 @@ class Client(object):
         :param message: Additional message
         :param thread_id: User/Group ID to send to. See :ref:`intro_threads`
         :param thread_type: See :ref:`intro_threads`
+        :param is_gif: if sending GIF, True, else False
         :type thread_type: models.ThreadType
         :return: :ref:`Message ID <intro_message_ids>` of the sent image
         :raises: FBchatException if request failed
@@ -990,6 +991,7 @@ class Client(object):
         :param message: Additional message
         :param thread_id: User/Group ID to send to. See :ref:`intro_threads`
         :param thread_type: See :ref:`intro_threads`
+        :param is_gif: if sending GIF, True, else False
         :type thread_type: models.ThreadType
         :return: :ref:`Message ID <intro_message_ids>` of the sent image
         :raises: FBchatException if request failed
@@ -1008,6 +1010,7 @@ class Client(object):
         :param message: Additional message
         :param thread_id: User/Group ID to send to. See :ref:`intro_threads`
         :param thread_type: See :ref:`intro_threads`
+        :param is_gif: if sending GIF, True, else False
         :type thread_type: models.ThreadType
         :return: :ref:`Message ID <intro_message_ids>` of the sent image
         :raises: FBchatException if request failed