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Firefox
Active
Applications Latest Version: 151.0.4 Latest Release: Jun 9, 2026
Mozilla Firefox is a free, open-source web browser focused on privacy, performance, and user freedom.
Versions
52
Latest Version
151.0.4
Active Support
3
EOL
49
Lifecycle Timeline
Today ↓
151
151
150
150
149
149
148
148
147
147
146
146
145
145
144
144
143
143
142
142
Active SupportSecurity SupportEOL
Versions
| Release | Release Date | Active Support | EOL | Latest Version | LTS | Status |
|---|---|---|---|---|---|---|
| 151 | May 18, 2026 | Yes | No | 151.0.4 | No | Active |
| 150 | Apr 21, 2026 | No | May 18, 2026 | 150.0.3 | No | EOL |
| 149 | Mar 24, 2026 | No | Apr 21, 2026 | 149.0.2 | No | EOL |
| 148 | Feb 24, 2026 | No | Mar 24, 2026 | 148.0.2 | No | EOL |
| 147 | Jan 13, 2026 | No | Feb 24, 2026 | 147.0.4 | No | EOL |
| 146 | Dec 9, 2025 | No | Jan 13, 2026 | 146.0.1 | No | EOL |
| 145 | Nov 11, 2025 | No | Dec 9, 2025 | 145.0.2 | No | EOL |
| 144 | Oct 14, 2025 | No | Nov 11, 2025 | 144.0.2 | No | EOL |
| 143 | Sep 16, 2025 | No | Oct 14, 2025 | 143.0.4 | No | EOL |
| 142 | Aug 19, 2025 | No | Sep 16, 2025 | 142.0.1 | No | EOL |
| 141 | Jul 22, 2025 | No | Aug 19, 2025 | 141.0.3 | No | EOL |
| 140 | Jun 24, 2025 | Yes | Sep 16, 2026 | 140.11.0 | Yes | Active |
| 139 | May 27, 2025 | No | Jun 24, 2025 | 139.0.4 | No | EOL |
| 138 | Apr 29, 2025 | No | May 27, 2025 | 138.0.4 | No | EOL |
| 137 | Apr 1, 2025 | No | Apr 29, 2025 | 137.0.2 | No | EOL |
| 136 | Mar 4, 2025 | No | Apr 1, 2025 | 136.0.4 | No | EOL |
| 135 | Feb 4, 2025 | No | Mar 4, 2025 | 135.0.1 | No | EOL |
| 134 | Jan 7, 2025 | No | Feb 4, 2025 | 134.0.2 | No | EOL |
| 133 | Nov 26, 2024 | No | Jan 7, 2025 | 133.0.3 | No | EOL |
| 132 | Oct 29, 2024 | No | Nov 26, 2024 | 132.0.2 | No | EOL |
| 131 | Oct 1, 2024 | No | Oct 29, 2024 | 131.0.3 | No | EOL |
| 130 | Sep 3, 2024 | No | Oct 1, 2024 | 130.0.1 | No | EOL |
| 129 | Aug 6, 2024 | No | Sep 3, 2024 | 129.0.2 | No | EOL |
| 128 | Jul 9, 2024 | No | Sep 16, 2025 | 128.14.0 | Yes | EOL |
| 127 | Jun 11, 2024 | No | Jul 9, 2024 | 127.0.2 | No | EOL |
| 126 | May 14, 2024 | No | Jun 11, 2024 | 126.0.1 | No | EOL |
| 125 | Apr 16, 2024 | No | May 14, 2024 | 125.0.3 | No | EOL |
| 124 | Mar 19, 2024 | No | Apr 16, 2024 | 124.0.2 | No | EOL |
| 123 | Feb 20, 2024 | No | Mar 19, 2024 | 123.0.1 | No | EOL |
| 122 | Jan 23, 2024 | No | Feb 20, 2024 | 122.0.1 | No | EOL |
| 121 | Dec 19, 2023 | No | Jan 23, 2024 | 121.0.1 | No | EOL |
| 120 | Nov 21, 2023 | No | Dec 19, 2023 | 120.0.1 | No | EOL |
| 119 | Oct 24, 2023 | No | Nov 21, 2023 | 119.0.1 | No | EOL |
| 118 | Sep 26, 2023 | No | Oct 24, 2023 | 118.0.2 | No | EOL |
| 117 | Aug 29, 2023 | No | Sep 26, 2023 | 117.0.1 | No | EOL |
| 116 | Aug 1, 2023 | No | Aug 29, 2023 | 116.0.3 | No | EOL |
| 115 | Jul 4, 2023 | Yes | Aug 28, 2026 | 115.36.0 | Yes | Active |
| 114 | Jun 6, 2023 | No | Jul 4, 2023 | 114.0.2 | No | EOL |
| 113 | May 9, 2023 | No | Jun 6, 2023 | 113.0.2 | No | EOL |
| 112 | Apr 11, 2023 | No | May 9, 2023 | 112.0.2 | No | EOL |
| 111 | Mar 14, 2023 | No | Apr 11, 2023 | 111.0.1 | No | EOL |
| 110 | Feb 14, 2023 | No | Mar 14, 2023 | 110.0.1 | No | EOL |
| 109 | Jan 17, 2023 | No | Feb 14, 2023 | 109.0.1 | No | EOL |
| 108 | Dec 13, 2022 | No | Jan 17, 2023 | 108.0.2 | No | EOL |
| 107 | Nov 15, 2022 | No | Dec 13, 2022 | 107.0.1 | No | EOL |
| 106 | Oct 18, 2022 | No | Nov 15, 2022 | 106.0.5 | No | EOL |
| 105 | Sep 20, 2022 | No | Oct 18, 2022 | 105.0.3 | No | EOL |
| 104 | Aug 23, 2022 | No | Sep 20, 2022 | 104.0.2 | No | EOL |
| 103 | Jul 26, 2022 | No | Aug 23, 2022 | 103.0.2 | No | EOL |
| 102 | Jun 28, 2022 | No | Sep 26, 2023 | 102.15.1 | Yes | EOL |
| 91 | Aug 10, 2021 | No | Sep 20, 2022 | 91.13.0 | Yes | EOL |
| 78 | Jun 30, 2020 | No | Nov 2, 2021 | 78.15.0 | Yes | EOL |
Frequently Asked Questions
Which versions of Firefox have reached end of life?
The following Firefox versions have reached end of life and no longer receive security updates: 150, 149, 148, 147, 146, 145, 144, 143 (and 41 more). It is recommended to upgrade to a supported version.
Is it safe to continue using Firefox 150?
Firefox 150 has reached end of life and no longer receives security patches or bug fixes. Continuing to use it may expose your systems to known vulnerabilities. We strongly recommend upgrading to a supported version.
What is the latest version of Firefox?
The latest version of Firefox is 151.0.4, released in the 151 release cycle.
How many versions of Firefox are currently supported?
Firefox currently has 3 actively supported version(s): 151, 140, 115.
When does Firefox 151 reach end of life?
Firefox 151 does not have a specific end-of-life date announced yet.
What should I do when Firefox reaches end of life?
When a Firefox version reaches end of life, you should: 1) Plan your migration to a supported version as soon as possible. 2) Review the release notes for breaking changes. 3) Test your applications thoroughly in a staging environment. 4) Update your dependencies to ensure compatibility with the new version.