Firefox ESR 153
Firefox ESR 153 is the current Firefox Extended Support Release. Mozilla released it on July 21, 2026 and has not yet published the date its support ends.
- Status
- Supported
- Released
- July 21, 2026
- Long-term support release
- Yes
- Official lifecycle page
- whattrainisitnow.com
- Checked on
After October 13, 2026, when ESR 140 stops getting updates, ESR 153 is the only main ESR branch. ESR 115 continues separately for Windows 7 to 8.1 and older macOS versions.
- Product
- Firefox ESR
- Version
- 153
- Sources
Page URL Mozilla release calendar https://whattrainisitnow.com/release/?version=153