Firefox 154 — lifecycle date eolFrom is now 2026-09-01
For Firefox 154, product is firefox; field changed is eolFrom; new value is 2026-09-01; detected is 2026-09-02, verified against its source on 2026-09-02.
- Product
- firefox verified
- Product label
- Firefox verified
- Release cycle
- 154 verified
- Field changed
- eolFrom verified
- New value
- 2026-09-01 verified
- Detected
- 2026-09-02 verified
What the source says
Support","eoes":null},"links":{"icon":"https://cdn.jsdelivr.net/npm/simple-icons/icons/firefoxbrowser.svg","html":"https://endoflife.date/firefox","releasePolicy":"https://www.mozilla.org/firefox/"},"releases":[{"name":"155","codename":null,"label":"155","releaseDate":"2026-09-01","isLts":false,"ltsFrom":null,"isEol":false,"eolFrom":null,"isMaintained":true,"latest":{"name":"155.0","date":"2026-09-01","link":"https://www.mozilla.org/firefox/155.0/releasenotes/"},"custom":null},{"name":"154","codename":null,"label":"154","releaseDate":"2026-08-18","isLts":false,"ltsFrom":null,"isEol":false,"eolFrom":"2026-09-01","isMaintained":true,"latest":{"name":"154.0.1","date":"2026-08-25","link":"https://www.mozilla.org/firefox/154.0.1/releasenotes/"},"custom":null},{"name":"153","codename":null,"label":"153
— endoflife.date, retrieved 2026-09-02
Source
- endoflife.datehttps://endoflife.date/api/v1/products/firefox
This one changes, and we watch it.Software end-of-life date changes — which dates moved and what they were before is re-read on a schedule and every change is dated. Subscribe: Atom feed · JSON · what has changed so far.