You can now develop your Elastic Beanstalk applications using Ruby 2.6. The latest Ruby 2.6 comes with numerous performance improvements and new features such as a new JIT (Just-In-Time) compiler and endless ranges. For a complete list of Ruby 2.6 features, visit the official Ruby 2.6 release announcement . You can upgrade your existing Elastic Beanstalk Ruby environment to Ruby 2.6 using the Elastic Beanstalk console or through the AWS CLI and Elastic Beanstalk API. See Updating Your Elastic Beanstalk Environment’s Platform Version for additional details.