Firefox 128 ESR

Version shipping to end-users on the ESR channel

Last release	May 27, 2025
Latest version	128.11.0

We decided to extend support for ESR 115 only on Windows 7-8.1 and macOS 10.12-10.14 up to September 2025.
We will re-evaluate this decision in August 2025 and announce any updates on ESR 115's end-of-life then.

Releases calendar
Firefox	ESR	Old ESR	Date
140	140.0	128.12 - 115.25	New ESR 140 branch! June 24
141	140.1	128.13 - 115.26	July 22
142	140.2	128.14 - 115.27	August 19
143	140.3		ESR 115 branch is EOL ESR 128 branch is EOL September 16
144	140.4		October 14
145	140.5		November 11
146	140.6		December 9
147	140.7		January 13