Version 0.12.20 of the rollbar-gem has been released, offering a compatibility fix for Sidekiq versions earlier than 2.3.2 and enhancing the project_gems feature. This update allows users to specify multiple in-project gems using either regex or strings, providing greater flexibility in configuration. The patch is available for download on Rubygems and GitHub, and the contribution for this release was made by Jonathan Cheatham through a pull request.