Python Requests Mock doesn't catch Timeout exception

I wrote a unittest to test timeout with the requests package

my_module.py:

import requests

class MyException(Exception): pass

def my_method():
    try:
        r = requests.get(...)
    except requests.exceptions.Timeout:
        raise MyException()

Unittest:

from mock import patch
from unittest import TestCase
from requests.exceptions import Timeout

from my_module import MyException

@patch('my_module.requests')
class MyUnitTest(TestCase):
    def my_test(self, requests):
        def get(*args, **kwargs):
            raise Timeout()

        requests.get = get

        try:
            my_module.my_method(...)
        except MyException:
            return

        self.fail("No Timeout)

But when it runs, the try block in my_method never catches the requests.exceptions.Timeout