Firefox End of Life (EOL) Dates and End of Support (EOS) Dates
48 Firefox versions have reached End of Life (EOL) and End of Support (EOS), including Firefox 149 (EOL date: Apr 21, 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 150.0.2 is the current supported release. For comparable end-of-life timelines, see Jcs1200 EOSL information.
Currently Supported Firefox Releases - Active EOS/EOSL Support (1)
| Release | Released | Security Support | Latest | LTS |
|---|---|---|---|---|
| 150 | (2 weeks and 5 days ago) | Active | 150.0.2 (3 days ago) | - |
Firefox Releases Nearing End of Life - Support Ending Soon (2)
Firefox End of Life (EOL) Releases - No Longer Supported (48)
| Release | Released | Security Support | Latest | LTS |
|---|---|---|---|---|
| 149 | (1 month and 2 weeks ago) | (2 weeks and 5 days ago) | 149.0.2 (1 month and 3 days ago) | - |
| 148 | (2 months ago) | (1 month and 2 weeks ago) | 148.0.2 (2 months ago) | - |
| 147 | (3 months ago) | (2 months ago) | 147.0.4 (2 months ago) | - |
| 146 | (5 months ago) | (3 months ago) | 146.0.1 (4 months ago) | - |
| 145 | (5 months ago) | (5 months ago) | 145.0.2 (5 months ago) | - |
| 144 | (6 months ago) | (5 months ago) | 144.0.2 (6 months ago) | - |
| 143 | (7 months ago) | (6 months ago) | 143.0.4 (7 months ago) | - |
| 142 | (8 months ago) | (7 months ago) | 142.0.1 (8 months ago) | - |
| 141 | (9 months ago) | (8 months ago) | 141.0.3 (9 months ago) | - |
| 139 | (11 months ago) | (10 months ago) | 139.0.4 (11 months ago) | - |
| 138 | (1 year ago) | (11 months ago) | 138.0.4 (11 months ago) | - |
| 137 | (1 year and 1 month ago) | (1 year ago) | 137.0.2 (1 year 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 2 months ago) | - |
| 134 | (1 year and 4 months ago) | (1 year and 3 months ago) | 134.0.2 (1 year and 3 months ago) | - |
| 133 | (1 year and 5 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 5 months ago) | 132.0.2 (1 year and 5 months ago) | - |
| 131 | (1 year and 7 months ago) | (1 year and 6 months ago) | 131.0.3 (1 year and 6 months ago) | - |
| 130 | (1 year and 8 months ago) | (1 year and 7 months ago) | 130.0.1 (1 year and 7 months ago) | - |
| 129 | (1 year and 9 months ago) | (1 year and 8 months ago) | 129.0.2 (1 year and 8 months ago) | - |
| 128 (ESR) | (1 year and 10 months ago) | (7 months ago) | 128.14.0 (8 months ago) | LTS |
| 127 | (1 year and 10 months ago) | (1 year and 10 months ago) | 127.0.2 (1 year and 10 months ago) | - |
| 126 | (1 year and 11 months ago) | (1 year and 10 months ago) | 126.0.1 (1 year and 11 months ago) | - |
| 125 | (2 years ago) | (1 year and 11 months ago) | 125.0.3 (2 years ago) | - |
| 124 | (2 years and 1 month ago) | (2 years ago) | 124.0.2 (2 years and 1 month ago) | - |
| 123 | (2 years and 2 months ago) | (2 years and 1 month ago) | 123.0.1 (2 years and 2 months ago) | - |
| 122 | (2 years and 3 months ago) | (2 years and 2 months ago) | 122.0.1 (2 years and 3 months ago) | - |
| 121 | (2 years and 4 months ago) | (2 years and 3 months ago) | 121.0.1 (2 years and 4 months ago) | - |
| 120 | (2 years and 5 months ago) | (2 years and 4 months ago) | 120.0.1 (2 years and 5 months ago) | - |
| 119 | (2 years and 6 months ago) | (2 years and 5 months ago) | 119.0.1 (2 years and 6 months ago) | - |
| 118 | (2 years and 7 months ago) | (2 years and 6 months ago) | 118.0.2 (2 years and 7 months ago) | - |
| 117 | (2 years and 8 months ago) | (2 years and 7 months ago) | 117.0.1 (2 years and 7 months ago) | - |
| 116 | (2 years and 9 months ago) | (2 years and 8 months ago) | 116.0.3 (2 years and 8 months ago) | - |
| 114 | (2 years and 11 months ago) | (2 years and 10 months ago) | 114.0.2 (2 years and 10 months ago) | - |
| 113 | (3 years ago) | (2 years and 11 months ago) | 113.0.2 (2 years and 11 months ago) | - |
| 112 | (3 years ago) | (3 years ago) | 112.0.2 (3 years ago) | - |
| 111 | (3 years and 1 month ago) | (3 years ago) | 111.0.1 (3 years and 1 month ago) | - |
| 110 | (3 years and 2 months ago) | (3 years and 1 month ago) | 110.0.1 (3 years and 2 months ago) | - |
| 109 | (3 years and 3 months ago) | (3 years and 2 months ago) | 109.0.1 (3 years and 3 months ago) | - |
| 108 | (3 years and 4 months ago) | (3 years and 3 months ago) | 108.0.2 (3 years and 4 months ago) | - |
| 107 | (3 years and 5 months ago) | (3 years and 4 months ago) | 107.0.1 (3 years and 5 months ago) | - |
| 106 | (3 years and 6 months ago) | (3 years and 5 months ago) | 106.0.5 (3 years and 6 months ago) | - |
| 105 | (3 years and 7 months ago) | (3 years and 6 months ago) | 105.0.3 (3 years and 7 months ago) | - |
| 104 | (3 years and 8 months ago) | (3 years and 7 months ago) | 104.0.2 (3 years and 8 months ago) | - |
| 103 | (3 years and 9 months ago) | (3 years and 8 months ago) | 103.0.2 (3 years and 9 months ago) | - |
| 102 (ESR) | (3 years and 10 months ago) | (2 years and 7 months ago) | 102.15.1 (2 years and 7 months ago) | LTS |
| 91 (ESR) | (4 years and 9 months ago) | (3 years and 7 months ago) | 91.13.0 (3 years and 8 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 150.0.2 is the latest. Note that Firefox 115 (ESR) support ends on Aug 28, 2026 — plan your upgrade before then.
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 150.0.2 to stay on a supported release.
Firefox End of Life (EOL) Version History
48 Firefox releases have reached End of Life (EOL) and End of Support (EOS) — no longer receiving updates or patches. Firefox 149 reached EOL on Apr 21, 2026. Firefox 150.0.2 is the recommended upgrade for users still on End of Life versions.