In January 2025, Jean Leblanc focused on enhancing security and reliability in the ruby/ruby repository by addressing vulnerabilities in gem caching. Jean implemented a secure gemspec caching flow that prevents the execution of shell-out commands during the caching process, thereby reducing risk and improving build determinism for downstream RubyGems workflows. To further strengthen regression coverage, Jean reintroduced a previously removed pre-evaluated gemspec test, ensuring future changes do not reintroduce the risk. This work, utilizing Ruby and testing frameworks with a focus on Bundler and RubyGems, contributed to more stable continuous integration and improved the overall reliability of the caching mechanism.