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Ruby & Rails Version Matrix

“I’m stuck with upgrading a Rails app from 3.x to something – anything! – newer. Just #$&! kill me now.”

Chances are you will be given a limping Rails application written years ago by someone else that never made the upgrade to more recent versions. It’s a pain in the ass to figure out which version of Ruby to use for the version of Rails you are upgrading to.

This is a summary of several sources for which versions of Ruby are required and recommended for different Rails releases.

Rails versionRuby versionRuby end-of-lifeRails end-of-life
6.0.0.beta1 >= 2.5.0
5.0.0beta1 to 5.2.2>= 2.2.2
4.2.1 to 4.2.11>= 1.9.3, 2.2 recommended
4.1 to 4.2.0>= 1.9.3, 2.1 recommended
4.0.5 to 4.1.0.rc2>= 1.9.3February 23, 20154.1.x December 18. 2015
4.0.0.beta1 to 4.0.4>= 1.8.7June 20134.x March 20, 2017
3.2.22 to, 2.2 recommended
3.2.13 to, 2.0 recommended
0.8.0 to 3.2.13.rc21.8.7June 20133.2.22 June 16, 2015


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