# Firefox 154 — lifecycle date releaseDate is now 2026-08-18

For Firefox 154, product is firefox; field changed is releaseDate; new value is 2026-08-18; detected is 2026-08-29, recorded from its source on 2026-08-29.

- **Product:** firefox _(verified: appears in the quote below)_
- **Product label:** Firefox _(verified: appears in the quote below)_
- **Release cycle:** 154 _(verified: appears in the quote below)_
- **Field changed:** releaseDate _(verified: appears in the quote below)_
- **New value:** 2026-08-18 _(verified: appears in the quote below)_
- **Detected:** 2026-08-29

## What the source says

> {"name":"154","codename":null,"label":"154","releaseDate":"2026-08-18"

## Source

- https://endoflife.date/api/v1/products/firefox

Last verified: 2026-08-29. Review by: 2026-09-12.
Part of [Software end-of-life date changes — which dates moved and what they were before](https://referencesource.org/software-eol-change-feed/).