If your application is successful, there may come a time where you’re on an unsupported version of a dependency. In the case of the Heroku Platform API, this dependency was a very old version of Active Record from many years ago. Due to the complexity involved in the upgrade, this core piece of infrastructure had been pegged at version 2.3.18, which was released in March 2013. We're happy to announce that we've overcome the challenge and are now running Active Record 4.2.4, the latest version, in production. In this post, we'll describe the technical challenges we faced in the upgrade process and take a look at how your organization could benefit from upgrading legacy software...


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