Firefox End of Life Dates
Release, end of support and end of life dates for every tracked Firefox version, with current status.
All products · Vendor lifecycle page · Source entry
Status as of 2026-09-23 (UTC): 57 versions tracked; 3 supported, 0 security fixes only, 1 ending within 90 days, 53 end of life.
| Version | Status | Released | Support ends | Latest |
|---|---|---|---|---|
| 156 | Supported | 2026-09-15 | Not announced | 156.0.1 |
| 155 | End of life | 2026-09-01 | 2026-09-15 | 155.0.1 |
| 154 | End of life | 2026-08-18 | 2026-09-01 | 154.0.1 |
| 153 (ESR) (LTS) | Supported | 2026-07-21 | Not announced | 153.3.0 |
| 152 | End of life | 2026-06-16 | 2026-07-21 | 152.0.6 |
| 151 | End of life | 2026-05-18 | 2026-06-16 | 151.0.4 |
| 150 | End of life | 2026-04-21 | 2026-05-18 | 150.0.3 |
| 149 | End of life | 2026-03-24 | 2026-04-21 | 149.0.2 |
| 148 | End of life | 2026-02-24 | 2026-03-24 | 148.0.2 |
| 147 | End of life | 2026-01-13 | 2026-02-24 | 147.0.4 |
| 146 | End of life | 2025-12-09 | 2026-01-13 | 146.0.1 |
| 145 | End of life | 2025-11-11 | 2025-12-09 | 145.0.2 |
| 144 | End of life | 2025-10-14 | 2025-11-11 | 144.0.2 |
| 143 | End of life | 2025-09-16 | 2025-10-14 | 143.0.4 |
| 142 | End of life | 2025-08-19 | 2025-09-16 | 142.0.1 |
| 141 | End of life | 2025-07-22 | 2025-08-19 | 141.0.3 |
| 140 (ESR) (LTS) | Ends within 90 days (6 days left) | 2025-06-24 | 2026-09-29 | 140.16.0 |
| 139 | End of life | 2025-05-27 | 2025-06-24 | 139.0.4 |
| 138 | End of life | 2025-04-29 | 2025-05-27 | 138.0.4 |
| 137 | End of life | 2025-04-01 | 2025-04-29 | 137.0.2 |
| 136 | End of life | 2025-03-04 | 2025-04-01 | 136.0.4 |
| 135 | End of life | 2025-02-04 | 2025-03-04 | 135.0.1 |
| 134 | End of life | 2025-01-07 | 2025-02-04 | 134.0.2 |
| 133 | End of life | 2024-11-26 | 2025-01-07 | 133.0.3 |
| 132 | End of life | 2024-10-29 | 2024-11-26 | 132.0.2 |
| 131 | End of life | 2024-10-01 | 2024-10-29 | 131.0.3 |
| 130 | End of life | 2024-09-03 | 2024-10-01 | 130.0.1 |
| 129 | End of life | 2024-08-06 | 2024-09-03 | 129.0.2 |
| 128 (ESR) (LTS) | End of life | 2024-07-09 | 2025-09-16 | 128.14.0 |
| 127 | End of life | 2024-06-11 | 2024-07-09 | 127.0.2 |
| 126 | End of life | 2024-05-14 | 2024-06-11 | 126.0.1 |
| 125 | End of life | 2024-04-16 | 2024-05-14 | 125.0.3 |
| 124 | End of life | 2024-03-19 | 2024-04-16 | 124.0.2 |
| 123 | End of life | 2024-02-20 | 2024-03-19 | 123.0.1 |
| 122 | End of life | 2024-01-23 | 2024-02-20 | 122.0.1 |
| 121 | End of life | 2023-12-19 | 2024-01-23 | 121.0.1 |
| 120 | End of life | 2023-11-21 | 2023-12-19 | 120.0.1 |
| 119 | End of life | 2023-10-24 | 2023-11-21 | 119.0.1 |
| 118 | End of life | 2023-09-26 | 2023-10-24 | 118.0.2 |
| 117 | End of life | 2023-08-29 | 2023-09-26 | 117.0.1 |
| 116 | End of life | 2023-08-01 | 2023-08-29 | 116.0.3 |
| 115 (ESR) (LTS) | Supported | 2023-07-04 | 2027-03-31 | 115.38.0 |
| 114 | End of life | 2023-06-06 | 2023-07-04 | 114.0.2 |
| 113 | End of life | 2023-05-09 | 2023-06-06 | 113.0.2 |
| 112 | End of life | 2023-04-11 | 2023-05-09 | 112.0.2 |
| 111 | End of life | 2023-03-14 | 2023-04-11 | 111.0.1 |
| 110 | End of life | 2023-02-14 | 2023-03-14 | 110.0.1 |
| 109 | End of life | 2023-01-17 | 2023-02-14 | 109.0.1 |
| 108 | End of life | 2022-12-13 | 2023-01-17 | 108.0.2 |
| 107 | End of life | 2022-11-15 | 2022-12-13 | 107.0.1 |
| 106 | End of life | 2022-10-18 | 2022-11-15 | 106.0.5 |
| 105 | End of life | 2022-09-20 | 2022-10-18 | 105.0.3 |
| 104 | End of life | 2022-08-23 | 2022-09-20 | 104.0.2 |
| 103 | End of life | 2022-07-26 | 2022-08-23 | 103.0.2 |
| 102 (ESR) (LTS) | End of life | 2022-06-28 | 2023-09-26 | 102.15.1 |
| 91 (ESR) (LTS) | End of life | 2021-08-10 | 2022-09-20 | 91.13.0 |
| 78 (ESR) (LTS) | End of life | 2020-06-30 | 2021-11-02 | 78.15.0 |
Note: "Not announced" means the vendor has not published a date. "Ended (no date published)" means the source marks it ended without a date. Dates are compared as calendar days in UTC, so a date can flip up to a day earlier or later than your local calendar.
Data: endoflife.date (MIT license), snapshot 2026-09-23. Dates come from each vendor's published lifecycle. Always confirm with the vendor link before a purchase or migration decision.