Bootstrap End of Life Dates
Release, end of support and end of life dates for every tracked Bootstrap version, with current status.
All products · Vendor lifecycle page · Source entry
Status as of 2026-09-23 (UTC): 4 versions tracked; 1 supported, 0 security fixes only, 0 ending within 90 days, 3 end of life.
| Version | Status | Released | Active support ends | Security support ends | Extended support ends | Latest |
|---|---|---|---|---|---|---|
| 5 (LTS) | Supported | 2021-05-05 | Not announced | Not announced | - | 5.3.8 |
| 4 (LTS) | End of life | 2018-01-18 | 2021-11-01 | 2023-01-01 | Not announced | 4.6.2 |
| 3 (LTS) | End of life | 2013-08-19 | 2016-09-05 | 2019-07-24 | Not announced | 3.4.1 |
| 2 | End of life | 2012-01-31 | 2013-08-19 | 2013-08-19 | Not announced | 2.3.2 |
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.