Bionic TLS failures?

I’m seeing odd issues with bionic and TLS connectivity. For example, trying to wget Python source from https://www.python.org is failing with an unknown certificate error:

https://travis-ci.org/jay0lee/GAM/jobs/564109830#L217

what’s odd is once I switched to curl it worked:

https://travis-ci.org/jay0lee/GAM/jobs/564117163#L213

I’m also seeing odd Ruby GEM TLS issues when trying to deploy to GitHub from Bionic:

https://travis-ci.org/jay0lee/got-your-back/jobs/564231740#L549

Any thoughts? BTW, thanks for making Bionic available!

Jay