Firefox End of Life (EOL) Dates and End of Support (EOS) Dates

Latest Release: 150.0.2

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)

Important: The following Firefox releases will reach End of Life (EOL) within 6 months. Plan your migration to a supported release to ensure continued security updates and support.
Release Released Security Support Latest LTS
115 (ESR) (2 years and 10 months ago) (in 3 months) 115.35.2 (3 days ago) LTS
140 (ESR) (10 months ago) (in 4 months) 140.10.2 (3 days ago) LTS

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.

EOL dates of related software products