python 2.7.5 の requests モジュールを用いたら warning が表示される理由は？

Centos7でpythonを実行すると下記の warning が表示されます。
pythonのアップデート必要というメッセージが表示されます。
2.7.5アップデート済みだと思います。
もし分かる方いれれば、教えていただけるとありがたいです。
よろしくお願いします。

[root@localhost デスクトップ]# python cuatro.py
/usr/lib/python2.7/site-packages/requests/packages/urllib3/util/ssl_.py:334: SNIMissingWarning: An   HTTPS request has been made, but the SNI (Subject Name Indication) extension to TLS is not available on this platform. This may cause the server to present an incorrect TLS certificate, which can cause validation failures. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
SNIMissingWarning
/usr/lib/python2.7/site-packages/requests/packages/urllib3/util/ssl_.py:132:InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
InsecurePlatformWarning

[root@localhost デスクトップ]# python
Python 2.7.5 (default, Jun 17 2014, 18:11:42) 
[GCC 4.8.2 20140120 (Red Hat 4.8.2-16)] on linux2
Type "help", "copyright", "credits" or "license" for more information.