--- title: Firefox will update twice as often from September description: Mozilla is switching Firefox's stable release cadence from monthly to bi-weekly starting September 2026, beginning with Firefox 155 on September 1. The change... canonical: https://daily.dev/posts/firefox-will-update-twice-as-often-from-september-vkltlzpvb twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Firefox will update twice as often from September | daily.dev og:description: Mozilla is switching Firefox's stable release cadence from monthly to bi-weekly starting September 2026, beginning with Firefox 155 on September 1. The change... og:url: https://daily.dev/posts/firefox-will-update-twice-as-often-from-september-vkltlzpvb og:image: https://api.daily.dev/og/posts/VKLtlZpVB.png og:image:alt: Firefox will update twice as often from September og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Firefox will update twice as often from September **[omg\! ubuntu\!](https://daily.dev/sources/omgub)** · 3 min read · 5 upvotes · 0 comments ## Summary Mozilla is switching Firefox's stable release cadence from monthly to bi-weekly starting September 2026, beginning with Firefox 155 on September 1. The change is framed as an experiment to be closely monitored, aiming to ship ready features faster and align with the fortnightly update schedule already used by Chromium-based browsers like Chrome. Engineers won't be required to work faster — unfinished features will simply wait for the next release. Existing users need take no action, as updates arrive through the same channels. The Firefox ESR channel will continue its slower release pace for those preferring stability. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Mozilla speeds Firefox release schedule to biweekly](https://daily.dev/posts/mozilla-speeds-firefox-release-schedule-to-biweekly-xxduahfuz) · The Register · 0 upvotes · 0 comments --- Tags: [#firefox](https://daily.dev/tags/firefox), [#mozilla](https://daily.dev/tags/mozilla) [View this post on daily.dev](https://daily.dev/posts/firefox-will-update-twice-as-often-from-september-vkltlzpvb) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Firefox will update twice as often from September","url":"https://daily.dev/posts/firefox-will-update-twice-as-often-from-september-vkltlzpvb","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/firefox-will-update-twice-as-often-from-september-vkltlzpvb"},"datePublished":"2026-07-16T05:46:20.667Z","dateModified":"2026-07-16T05:46:38.459Z","description":"Mozilla is switching Firefox's stable release cadence from monthly to bi-weekly starting September 2026, beginning with Firefox 155 on September 1. 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