Support of Ruby 2.1 has ended

We announce that all support of the Ruby 2.1 series has ended.

After the release of Ruby 2.1.10 at the end of March of the last year, the support of the Ruby 2.1 series was in the security maintenance phase. Now, after one year has passed, this phase has ended. Therefore, at March 31, 2017, all support of the Ruby 2.1 series has ended. Bug and security fixes from more recent Ruby versions will no longer be backported to 2.1, and no further patch release of 2.1 will be released. We highly recommend that you upgrade to Ruby 2.4 or 2.3 as soon as possible.

About currently supported Ruby versions

Ruby 2.4 series

Currently in normal maintenance phase. We will backport bug fixes and release with the fixes whenever necessary. And, if a critical security issue is found, we will release an urgent fix for it.

Ruby 2.3 series

Currently in normal maintenance phase. We will backport bug fixes and release with the fixes whenever necessary. And, if a critical security issue is found, we will release an urgent fix for it.

Ruby 2.2 series

Currently in security maintenance phase. We will never backport any bug fixes to 2.2 except security fixes. If a critical security issue is found, we will release an urgent fix for it. We are planning to end the support of the Ruby 2.2 series at the end of March 2018.