Incompatible rubygems version with Heroku-20

[jippylong12]

What version of Bootstrap Email are you using?

v1.5.1

How are you compiling?

bundler

Code example

Gemfile

gem "bootstrap-email", "~> 1.4"

Heroku Build Log

       Fetching gem metadata from https://rubygems.org/.......
       Fetching gem metadata from https://rubygems.org/.
       Resolving dependencies........
       sass-embedded-1.63.6-x86_64-linux-musl requires rubygems version >= 3.3.22,
       which is incompatible with the current version, 3.1.6

Describe your issue

Deployed on Heroku today on Heroku-20 stack Ruby 2.7.7. Received strange error. Identified this gem as the source.

Looked at changelogs from 1.4 to 1.5 and I highly suggest that 1.5 be yanked and resubmitted as 2.0 given the major under-the-hood changes in the 1.5 update.

Could still be on my end though as I'm not sure why it used sass-embedded v 1.63.6 when it could have pulled 1.53+. Since 1.58.3 they've had the Rubygems version requirement.

I just wanted to post it here in case anyone else ran into the issue. Update your Gemfile

gem "bootstrap-email", "1.4.1"

To prevent Heroku from pulling and building v1.5. Just as a stopgap to keep the system running.

Rubygems version on Heroku appears to be Ruby version dependent .

So you'll need to upgrade your Ruby version to 3.1.5 so that Heroku will use the RubyGems v3.3.27