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Firefox end-of-life (EOL) dates
Eolix tracks 58 release cycles of Firefox — 55 have already reached end of life. Release dates, latest versions, and support status below — the same lifecycle data Eolix validates whole software estates against.
| Release | Released | Latest | End of life | Status |
|---|---|---|---|---|
| 157 | 09-29-2026 | 157.0 | Not announced | No EOL announced |
| 156 | 09-15-2026 | 156.0.1 | 09-29-2026 | End of life |
| 155 | 09-01-2026 | 155.0.1 | 09-15-2026 | End of life |
| 154 | 08-18-2026 | 154.0.1 | 09-01-2026 | End of life |
| 153 (ESR) | 07-21-2026 | 153.4.0 | Not announced | No EOL announced |
| 152 | 06-16-2026 | 152.0.6 | 07-21-2026 | End of life |
| 151 | 05-18-2026 | 151.0.4 | 06-16-2026 | End of life |
| 150 | 04-21-2026 | 150.0.3 | 05-18-2026 | End of life |
| 149 | 03-24-2026 | 149.0.2 | 04-21-2026 | End of life |
| 148 | 02-24-2026 | 148.0.2 | 03-24-2026 | End of life |
| 147 | 01-13-2026 | 147.0.4 | 02-24-2026 | End of life |
| 146 | 12-09-2025 | 146.0.1 | 01-13-2026 | End of life |
| 145 | 11-11-2025 | 145.0.2 | 12-09-2025 | End of life |
| 144 | 10-14-2025 | 144.0.2 | 11-11-2025 | End of life |
| 143 | 09-16-2025 | 143.0.4 | 10-14-2025 | End of life |
| 142 | 08-19-2025 | 142.0.1 | 09-16-2025 | End of life |
| 141 | 07-22-2025 | 141.0.3 | 08-19-2025 | End of life |
| 140 (ESR) | 06-24-2025 | 140.17.0 | 09-29-2026 | End of life |
| 139 | 05-27-2025 | 139.0.4 | 06-24-2025 | End of life |
| 138 | 04-29-2025 | 138.0.4 | 05-27-2025 | End of life |
| 137 | 04-01-2025 | 137.0.2 | 04-29-2025 | End of life |
| 136 | 03-04-2025 | 136.0.4 | 04-01-2025 | End of life |
| 135 | 02-04-2025 | 135.0.1 | 03-04-2025 | End of life |
| 134 | 01-07-2025 | 134.0.2 | 02-04-2025 | End of life |
| 133 | 11-26-2024 | 133.0.3 | 01-07-2025 | End of life |
| 132 | 10-29-2024 | 132.0.2 | 11-26-2024 | End of life |
| 131 | 10-01-2024 | 131.0.3 | 10-29-2024 | End of life |
| 130 | 09-03-2024 | 130.0.1 | 10-01-2024 | End of life |
| 129 | 08-06-2024 | 129.0.2 | 09-03-2024 | End of life |
| 128 (ESR) | 07-09-2024 | 128.14.0 | 09-16-2025 | End of life |
| 127 | 06-11-2024 | 127.0.2 | 07-09-2024 | End of life |
| 126 | 05-14-2024 | 126.0.1 | 06-11-2024 | End of life |
| 125 | 04-16-2024 | 125.0.3 | 05-14-2024 | End of life |
| 124 | 03-19-2024 | 124.0.2 | 04-16-2024 | End of life |
| 123 | 02-20-2024 | 123.0.1 | 03-19-2024 | End of life |
| 122 | 01-23-2024 | 122.0.1 | 02-20-2024 | End of life |
| 121 | 12-19-2023 | 121.0.1 | 01-23-2024 | End of life |
| 120 | 11-21-2023 | 120.0.1 | 12-19-2023 | End of life |
| 119 | 10-24-2023 | 119.0.1 | 11-21-2023 | End of life |
| 118 | 09-26-2023 | 118.0.2 | 10-24-2023 | End of life |
| 117 | 08-29-2023 | 117.0.1 | 09-26-2023 | End of life |
| 116 | 08-01-2023 | 116.0.3 | 08-29-2023 | End of life |
| 115 (ESR) | 07-04-2023 | 115.38.0 | 03-31-2027 | Ending soon |
| 114 | 06-06-2023 | 114.0.2 | 07-04-2023 | End of life |
| 113 | 05-09-2023 | 113.0.2 | 06-06-2023 | End of life |
| 112 | 04-11-2023 | 112.0.2 | 05-09-2023 | End of life |
| 111 | 03-14-2023 | 111.0.1 | 04-11-2023 | End of life |
| 110 | 02-14-2023 | 110.0.1 | 03-14-2023 | End of life |
| 109 | 01-17-2023 | 109.0.1 | 02-14-2023 | End of life |
| 108 | 12-13-2022 | 108.0.2 | 01-17-2023 | End of life |
| 107 | 11-15-2022 | 107.0.1 | 12-13-2022 | End of life |
| 106 | 10-18-2022 | 106.0.5 | 11-15-2022 | End of life |
| 105 | 09-20-2022 | 105.0.3 | 10-18-2022 | End of life |
| 104 | 08-23-2022 | 104.0.2 | 09-20-2022 | End of life |
| 103 | 07-26-2022 | 103.0.2 | 08-23-2022 | End of life |
| 102 (ESR) | 06-28-2022 | 102.15.1 | 09-26-2023 | End of life |
| 91 (ESR) | 08-10-2021 | 91.13.0 | 09-20-2022 | End of life |
| 78 (ESR) | 06-30-2020 | 78.15.0 | 11-02-2021 | End of life |
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