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Bootstrap

Bootstrap

Framework

Bootstrap 5 is the newest actively maintained release, currently at patch 5.3.8. 4 of 4 tracked cycles remain supported. The next cycle scheduled to reach end-of-life is 2, on August 19, 2013.

Latest version

5.3.8

Aug 25, 2025

Actively maintained cycles

1

of 4 tracked

Total cycles tracked

4

since Jan 31, 2012

Support pattern

How Bootstrap has behaved across the cycles tracked here, rather than what its policy documents state. Useful for judging how much runway a version is likely to have before you commit to it.

Typical support window

59 mo (~5 years)

median of 3 completed cycles

New cycle roughly every

40 months

median gap between releases

Compared with framework

+41 mo

longer than the framework median

Computed from release and end-of-life dates tracked for Bootstrap. Medians are used rather than averages so one unusually short or long release does not skew the figure. Cycles with no recorded end-of-life date are excluded from the support window.

Release lifecycle

Actively maintainedSecurity support onlyEnd of life
Today
5Latest
5.3.8 · Aug 25, 2025
4
EOL Jan 1, 2023
3
EOL Jul 24, 2019
2
EOL Aug 19, 2013
201220132014201520162017201820192020202120222023202420252026

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