Firefox End of Life (EOL) Dates and End of Support (EOS) Dates
49 Firefox versions have reached End of Life (EOL) and End of Support (EOS), including Firefox 150 (EOL date: May 18, 2026) — no longer receiving security updates or patches. Firefox 115 (ESR) reaches its End of Support date on Aug 28, 2026 — plan your upgrade path now. Firefox 151.0.1 is the current supported release. Also see Blender end of life dates for related end-of-life information.
Currently Supported Firefox Releases - Active EOS/EOSL Support (1)
| Release | Released | Security Support | Latest | LTS |
|---|---|---|---|---|
| 151 | (1 week and 1 day ago) | Active | 151.0.1 (5 days ago) | - |
Firefox Releases Nearing End of Life - Support Ending Soon (2)
Firefox End of Life (EOL) Releases - No Longer Supported (49)
| Release | Released | Security Support | Latest | LTS |
|---|---|---|---|---|
| 150 | (1 month and 5 days ago) | (1 week and 1 day ago) | 150.0.3 (2 weeks ago) | - |
| 149 | (2 months ago) | (1 month and 5 days ago) | 149.0.2 (1 month and 2 weeks ago) | - |
| 148 | (3 months ago) | (2 months ago) | 148.0.2 (2 months ago) | - |
| 147 | (4 months ago) | (3 months ago) | 147.0.4 (3 months ago) | - |
| 146 | (5 months ago) | (4 months ago) | 146.0.1 (5 months ago) | - |
| 145 | (6 months ago) | (5 months ago) | 145.0.2 (6 months ago) | - |
| 144 | (7 months ago) | (6 months ago) | 144.0.2 (6 months ago) | - |
| 143 | (8 months ago) | (7 months ago) | 143.0.4 (7 months ago) | - |
| 142 | (9 months ago) | (8 months ago) | 142.0.1 (8 months ago) | - |
| 141 | (10 months ago) | (9 months ago) | 141.0.3 (9 months ago) | - |
| 139 | (11 months ago) | (11 months ago) | 139.0.4 (11 months ago) | - |
| 138 | (1 year ago) | (11 months ago) | 138.0.4 (1 year ago) | - |
| 137 | (1 year and 1 month ago) | (1 year ago) | 137.0.2 (1 year and 1 month ago) | - |
| 136 | (1 year and 2 months ago) | (1 year and 1 month ago) | 136.0.4 (1 year and 1 month ago) | - |
| 135 | (1 year and 3 months ago) | (1 year and 2 months ago) | 135.0.1 (1 year and 3 months ago) | - |
| 134 | (1 year and 4 months ago) | (1 year and 3 months ago) | 134.0.2 (1 year and 4 months ago) | - |
| 133 | (1 year and 6 months ago) | (1 year and 4 months ago) | 133.0.3 (1 year and 5 months ago) | - |
| 132 | (1 year and 6 months ago) | (1 year and 6 months ago) | 132.0.2 (1 year and 6 months ago) | - |
| 131 | (1 year and 7 months ago) | (1 year and 6 months ago) | 131.0.3 (1 year and 7 months ago) | - |
| 130 | (1 year and 8 months ago) | (1 year and 7 months ago) | 130.0.1 (1 year and 8 months ago) | - |
| 129 | (1 year and 9 months ago) | (1 year and 8 months ago) | 129.0.2 (1 year and 9 months ago) | - |
| 128 (ESR) | (1 year and 10 months ago) | (8 months ago) | 128.14.0 (9 months ago) | LTS |
| 127 | (1 year and 11 months ago) | (1 year and 10 months ago) | 127.0.2 (1 year and 11 months ago) | - |
| 126 | (2 years ago) | (1 year and 11 months ago) | 126.0.1 (1 year and 11 months ago) | - |
| 125 | (2 years and 1 month ago) | (2 years ago) | 125.0.3 (2 years ago) | - |
| 124 | (2 years and 2 months ago) | (2 years and 1 month ago) | 124.0.2 (2 years and 1 month ago) | - |
| 123 | (2 years and 3 months ago) | (2 years and 2 months ago) | 123.0.1 (2 years and 2 months ago) | - |
| 122 | (2 years and 4 months ago) | (2 years and 3 months ago) | 122.0.1 (2 years and 3 months ago) | - |
| 121 | (2 years and 5 months ago) | (2 years and 4 months ago) | 121.0.1 (2 years and 4 months ago) | - |
| 120 | (2 years and 6 months ago) | (2 years and 5 months ago) | 120.0.1 (2 years and 5 months ago) | - |
| 119 | (2 years and 7 months ago) | (2 years and 6 months ago) | 119.0.1 (2 years and 6 months ago) | - |
| 118 | (2 years and 8 months ago) | (2 years and 7 months ago) | 118.0.2 (2 years and 7 months ago) | - |
| 117 | (2 years and 8 months ago) | (2 years and 8 months ago) | 117.0.1 (2 years and 8 months ago) | - |
| 116 | (2 years and 9 months ago) | (2 years and 8 months ago) | 116.0.3 (2 years and 9 months ago) | - |
| 114 | (2 years and 11 months ago) | (2 years and 10 months ago) | 114.0.2 (2 years and 11 months ago) | - |
| 113 | (3 years ago) | (2 years and 11 months ago) | 113.0.2 (3 years ago) | - |
| 112 | (3 years and 1 month ago) | (3 years ago) | 112.0.2 (3 years and 1 month ago) | - |
| 111 | (3 years and 2 months ago) | (3 years and 1 month ago) | 111.0.1 (3 years and 2 months ago) | - |
| 110 | (3 years and 3 months ago) | (3 years and 2 months ago) | 110.0.1 (3 years and 2 months ago) | - |
| 109 | (3 years and 4 months ago) | (3 years and 3 months ago) | 109.0.1 (3 years and 3 months ago) | - |
| 108 | (3 years and 5 months ago) | (3 years and 4 months ago) | 108.0.2 (3 years and 4 months ago) | - |
| 107 | (3 years and 6 months ago) | (3 years and 5 months ago) | 107.0.1 (3 years and 5 months ago) | - |
| 106 | (3 years and 7 months ago) | (3 years and 6 months ago) | 106.0.5 (3 years and 6 months ago) | - |
| 105 | (3 years and 8 months ago) | (3 years and 7 months ago) | 105.0.3 (3 years and 7 months ago) | - |
| 104 | (3 years and 9 months ago) | (3 years and 8 months ago) | 104.0.2 (3 years and 8 months ago) | - |
| 103 | (3 years and 10 months ago) | (3 years and 9 months ago) | 103.0.2 (3 years and 9 months ago) | - |
| 102 (ESR) | (3 years and 10 months ago) | (2 years and 8 months ago) | 102.15.1 (2 years and 8 months ago) | LTS |
| 91 (ESR) | (4 years and 9 months ago) | (3 years and 8 months ago) | 91.13.0 (3 years and 9 months ago) | LTS |
| 78 (ESR) | (5 years and 10 months ago) | (4 years and 6 months ago) | 78.15.0 (4 years and 7 months ago) | LTS |
Firefox End of Life & Support Summary
Which Firefox Versions Are Currently Supported?
Firefox currently has 1 supported release. Firefox 151.0.1 is the latest. Note that Firefox 115 (ESR) support ends on Aug 28, 2026 — plan your upgrade before then. Also see Veeam Backup for Microsoft 365 end of service life for related end-of-life information.
Firefox Versions Nearing End of Life
2 Firefox releases are reaching End of Life (EOL) within 6 months. Firefox 115 (ESR) support ends on Aug 28, 2026. Firefox 140 (ESR) follows on Sep 16, 2026. Upgrade to Firefox 151.0.1 to stay on a supported release. Also see nix end of service life for related end-of-life information.
Firefox End of Life (EOL) Version History
49 Firefox releases have reached End of Life (EOL) and End of Support (EOS) — no longer receiving updates or patches. Firefox 150 reached EOL on May 18, 2026. Firefox 151.0.1 is the recommended upgrade for users still on End of Life versions. Related: Spotlight Secure release schedule — end-of-support dates and release schedule.