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Firefox End of Life (EOL) Dates
About Firefox
Firefox currently has 56 tracked version lifecycle records, including 2 that remain supported. The latest listed cycle is 155.
Data source: endoflife.date lifecycle dataset
Last updated: September 5, 2026
EOL Date tracks software and hardware end-of-life dates. Product names, logos, and trademarks belong to their respective owners and do not imply endorsement or affiliation.
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Firefox Version Support Timeline
Cycle | Release Date | Support Ends | EOL Date | Latest | Source | Status |
|---|---|---|---|---|---|---|
155 | 2026-09-01 | - | - | 155.0.1 | - | Active |
154 | 2026-08-18 | - | 2026-09-01 | 154.0.1 | - | End of Life |
153LTS | 2026-07-21 | - | - | 153.2.0 | - | Active |
152 | 2026-06-16 | - | 2026-07-21 | 152.0.6 | - | End of Life |
151 | 2026-05-18 | - | 2026-06-16 | 151.0.4 | - | End of Life |
150 | 2026-04-21 | - | 2026-05-18 | 150.0.3 | - | End of Life |
149 | 2026-03-24 | - | 2026-04-21 | 149.0.2 | - | End of Life |
148 | 2026-02-24 | - | 2026-03-24 | 148.0.2 | - | End of Life |
147 | 2026-01-13 | - | 2026-02-24 | 147.0.4 | - | End of Life |
146 | 2025-12-09 | - | 2026-01-13 | 146.0.1 | - | End of Life |
145 | 2025-11-11 | - | 2025-12-09 | 145.0.2 | - | End of Life |
144 | 2025-10-14 | - | 2025-11-11 | 144.0.2 | - | End of Life |
143 | 2025-09-16 | - | 2025-10-14 | 143.0.4 | - | End of Life |
142 | 2025-08-19 | - | 2025-09-16 | 142.0.1 | - | End of Life |
141 | 2025-07-22 | - | 2025-08-19 | 141.0.3 | - | End of Life |
140LTS | 2025-06-24 | - | 2026-09-29 | 140.15.0 | - | End of Life |
139 | 2025-05-27 | - | 2025-06-24 | 139.0.4 | - | End of Life |
138 | 2025-04-29 | - | 2025-05-27 | 138.0.4 | - | End of Life |
137 | 2025-04-01 | - | 2025-04-29 | 137.0.2 | - | End of Life |
136 | 2025-03-04 | - | 2025-04-01 | 136.0.4 | - | End of Life |
135 | 2025-02-04 | - | 2025-03-04 | 135.0.1 | - | End of Life |
134 | 2025-01-07 | - | 2025-02-04 | 134.0.2 | - | End of Life |
133 | 2024-11-26 | - | 2025-01-07 | 133.0.3 | - | End of Life |
132 | 2024-10-29 | - | 2024-11-26 | 132.0.2 | - | End of Life |
131 | 2024-10-01 | - | 2024-10-29 | 131.0.3 | - | End of Life |
130 | 2024-09-03 | - | 2024-10-01 | 130.0.1 | - | End of Life |
129 | 2024-08-06 | - | 2024-09-03 | 129.0.2 | - | End of Life |
128LTS | 2024-07-09 | - | 2025-09-16 | 128.14.0 | - | End of Life |
127 | 2024-06-11 | - | 2024-07-09 | 127.0.2 | - | End of Life |
126 | 2024-05-14 | - | 2024-06-11 | 126.0.1 | - | End of Life |
125 | 2024-04-16 | - | 2024-05-14 | 125.0.3 | - | End of Life |
124 | 2024-03-19 | - | 2024-04-16 | 124.0.2 | - | End of Life |
123 | 2024-02-20 | - | 2024-03-19 | 123.0.1 | - | End of Life |
122 | 2024-01-23 | - | 2024-02-20 | 122.0.1 | - | End of Life |
121 | 2023-12-19 | - | 2024-01-23 | 121.0.1 | - | End of Life |
120 | 2023-11-21 | - | 2023-12-19 | 120.0.1 | - | End of Life |
119 | 2023-10-24 | - | 2023-11-21 | 119.0.1 | - | End of Life |
118 | 2023-09-26 | - | 2023-10-24 | 118.0.2 | - | End of Life |
117 | 2023-08-29 | - | 2023-09-26 | 117.0.1 | - | End of Life |
116 | 2023-08-01 | - | 2023-08-29 | 116.0.3 | - | End of Life |
115LTS | 2023-07-04 | - | 2027-03-31 | 115.38.0 | - | Ending Soon |
114 | 2023-06-06 | - | 2023-07-04 | 114.0.2 | - | End of Life |
113 | 2023-05-09 | - | 2023-06-06 | 113.0.2 | - | End of Life |
112 | 2023-04-11 | - | 2023-05-09 | 112.0.2 | - | End of Life |
111 | 2023-03-14 | - | 2023-04-11 | 111.0.1 | - | End of Life |
110 | 2023-02-14 | - | 2023-03-14 | 110.0.1 | - | End of Life |
109 | 2023-01-17 | - | 2023-02-14 | 109.0.1 | - | End of Life |
108 | 2022-12-13 | - | 2023-01-17 | 108.0.2 | - | End of Life |
107 | 2022-11-15 | - | 2022-12-13 | 107.0.1 | - | End of Life |
106 | 2022-10-18 | - | 2022-11-15 | 106.0.5 | - | End of Life |
105 | 2022-09-20 | - | 2022-10-18 | 105.0.3 | - | End of Life |
104 | 2022-08-23 | - | 2022-09-20 | 104.0.2 | - | End of Life |
103 | 2022-07-26 | - | 2022-08-23 | 103.0.2 | - | End of Life |
102LTS | 2022-06-28 | - | 2023-09-26 | 102.15.1 | - | End of Life |
91LTS | 2021-08-10 | - | 2022-09-20 | 91.13.0 | - | End of Life |
78LTS | 2020-06-30 | - | 2021-11-02 | 78.15.0 | - | End of Life |
Related Products
Related Resources
What is EOL?
EOL (End of Life) means the product no longer receives official updates, security patches, or technical support.
Why Track EOL?
Using unsupported software can lead to security vulnerabilities, compatibility issues, and compliance risks.
Get Notified
Subscribe to Firefox EOL alerts to receive email notifications before versions reach end of life.