Firefox 91 end of life (EOL) date and support status
End of life End of life since 2022-09-20 (1479 days ago)
Upgrade: Firefox 91 no longer receives fixes. Supported cycles: 157, 153, 115.
| Product | Firefox |
|---|---|
| Version cycle | 91 |
| Status | End of life |
| Released | 2021-08-10 |
| LTS | yes |
| Active support until | — |
| End of life | 2022-09-20 |
| Latest version | 91.13.0 (2022-08-23) |
| Last verified | 2026-10-08 |
All Firefox versions → · Source: endoflife.date
Frequently asked questions
Is Firefox 91 end of life?
Yes. End of life since 2022-09-20 (1479 days ago). It no longer receives security or bug fixes.
When does Firefox 91 reach end of life?
Firefox 91 reached end of life on 2022-09-20.
When was Firefox 91 released?
Firefox 91 was first released on 2021-08-10.
What is the latest Firefox 91 version?
The latest 91 release is 91.13.0, published on 2022-08-23.
Is Firefox 91 an LTS release?
Yes.
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