Nundina › Discover calendars › Version End-of-Life Dates calendar › Ruby 4.0 end of lifeRuby 4.0 end of life31 March 2029Ruby 4.0 stops receiving security updates. Released 25 Dec 2025. Latest version 4.0.9 (22 Oct 2026). Source: endoflife.date.Version End-of-Life Dates calendarMore from this calendar