updates = self.bot.get_updates(
    offset=self.update_id,
    timeout=30,
    network_delay=1.0
)

Traceback (most recent call last):
  File "/app/.heroku/python/lib/python3.6/site-packages/telegram/vendor/ptb_urllib3/urllib3/connectionpool.py", line 402, in _make_request
    six.raise_from(e, None)
  File "<string>", line 2, in raise_from
  File "/app/.heroku/python/lib/python3.6/site-packages/telegram/vendor/ptb_urllib3/urllib3/connectionpool.py", line 398, in _make_request
    httplib_response = conn.getresponse()
  File "/app/.heroku/python/lib/python3.6/http/client.py", line 1331, in getresponse
    response.begin()
  File "/app/.heroku/python/lib/python3.6/http/client.py", line 297, in begin
    version, status, reason = self._read_status()
  File "/app/.heroku/python/lib/python3.6/http/client.py", line 258, in _read_status
    line = str(self.fp.readline(_MAXLINE + 1), "iso-8859-1")
  File "/app/.heroku/python/lib/python3.6/socket.py", line 586, in readinto
    return self._sock.recv_into(b)
  File "/app/.heroku/python/lib/python3.6/ssl.py", line 1002, in recv_into
    return self.read(nbytes, buffer)
  File "/app/.heroku/python/lib/python3.6/ssl.py", line 865, in read
    return self._sslobj.read(len, buffer)
  File "/app/.heroku/python/lib/python3.6/ssl.py", line 625, in read
    v = self._sslobj.read(len, buffer)
socket.timeout: The read operation timed out

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/app/.heroku/python/lib/python3.6/site-packages/telegram/utils/request.py", line 174, in _request_wrapper
    resp = self._con_pool.request(*args, **kwargs)
  File "/app/.heroku/python/lib/python3.6/site-packages/telegram/vendor/ptb_urllib3/urllib3/request.py", line 70, in request
    **urlopen_kw)
  File "/app/.heroku/python/lib/python3.6/site-packages/telegram/vendor/ptb_urllib3/urllib3/request.py", line 148, in request_encode_body
    return self.urlopen(method, url, **extra_kw)
  File "/app/.heroku/python/lib/python3.6/site-packages/telegram/vendor/ptb_urllib3/urllib3/poolmanager.py", line 244, in urlopen
    response = conn.urlopen(method, u.request_uri, **kw)
  File "/app/.heroku/python/lib/python3.6/site-packages/telegram/vendor/ptb_urllib3/urllib3/connectionpool.py", line 666, in urlopen
    _stacktrace=sys.exc_info()[2])
  File "/app/.heroku/python/lib/python3.6/site-packages/telegram/vendor/ptb_urllib3/urllib3/util/retry.py", line 347, in increment
    raise six.reraise(type(error), error, _stacktrace)
  File "/app/.heroku/python/lib/python3.6/site-packages/telegram/vendor/ptb_urllib3/urllib3/packages/six.py", line 686, in reraise
    raise value
  File "/app/.heroku/python/lib/python3.6/site-packages/telegram/vendor/ptb_urllib3/urllib3/connectionpool.py", line 617, in urlopen
    chunked=chunked)
  File "/app/.heroku/python/lib/python3.6/site-packages/telegram/vendor/ptb_urllib3/urllib3/connectionpool.py", line 405, in _make_request
    exc_cls=ReadTimeoutError)
  File "/app/.heroku/python/lib/python3.6/site-packages/telegram/vendor/ptb_urllib3/urllib3/connectionpool.py", line 321, in _raise_timeout
    raise exc_cls(*args)
telegram.vendor.ptb_urllib3.urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='api.telegram.org', port=443): Read timed out. (read timeout=31.0)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/app/myapp/bot.py", line 81, in update_forever
    network_delay=1.0
  File "/app/.heroku/python/lib/python3.6/site-packages/telegram/bot.py", line 52, in decorator
    result = func(self, *args, **kwargs)
  File "/app/.heroku/python/lib/python3.6/site-packages/telegram/bot.py", line 1392, in get_updates
    result = self._request.post(url, data, timeout=float(read_latency) + float(timeout))
  File "/app/.heroku/python/lib/python3.6/site-packages/telegram/utils/request.py", line 252, in post
    **urlopen_kwargs)
  File "/app/.heroku/python/lib/python3.6/site-packages/telegram/utils/request.py", line 176, in _request_wrapper
    raise TimedOut()
telegram.error.TimedOut: Timed out