Recurring warning after upgrade to 45.1

After a relative succesfull upgrade to 45.1 I keep getting below error in the logs (the “Thread-x” part can be different). I’m not using SSL for anything.

Any ideas?

2017-05-26 09:21:51 WARNING (Thread-3) [py.warnings] /srv/hass/hass_venv/lib/python3.4/site-packages/requests/packages/urllib3/connectionpool.py:852: InsecureRequestWarning: Unverified HTTPS request is being made. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
  InsecureRequestWarning)

Do you use Unifi? I saw an issue being worked on for this.
https://github.com/home-assistant/home-assistant/pull/7331

Yep, using Unifi. I could not see any references in the error to Unifi so hope this is it and will be fixed soon by your mentioned pull request.

Related but more specific to your problem:

https://github.com/home-assistant/home-assistant/issues/7567