Nundina › Discover calendars › Version End-of-Life Dates calendar › Firefox 157 end of lifeFirefox 157 end of life13 October 2026Firefox 157 stops receiving security updates. Released 29 Sep 2026. Latest version 157.0.1 (6 Oct 2026). Source: endoflife.date.Version End-of-Life Dates calendarMore from this calendar