This is good but https://github.com/renovatebot/renovate does support Elixir and may be a better option.

Oh. It does show up when you search. I initially ruled it out because neither language was listed in "Language Support". I'll check it out

Ok. I'll look into renovate more since it appears we can do a custom manager to handle erlang

I'm going to close this in favor of getting renovate set up.