PostCSS End of Life (EOL) Dates & Support Timeline
Complete end-of-life dates, support windows, and security status for all PostCSS versions. Data sourced from endoflife.date and official vendor documentation. Updated at every deploy.
PostCSS 8.5 is supported, with no end-of-life or end-of-support date announced yet. 15 tracked PostCSS versions are declared end of life without a published date. The full PostCSS lifecycle, with every version's release and end-of-support date, is in the table below.
Running an EOL version? Get matched with support options — free ↓| Version | Latest Release | Release Date | EOL Date | Days | Status |
|---|---|---|---|---|---|
| 0.1 | 0.1.0 | Nov 4, 2013 | Not published | Past EOL | EOL |
| 0.2 | 0.2.0 | Dec 17, 2013 | Not published | Past EOL | EOL |
| 0.3 | 0.3.5 | Feb 13, 2014 | Not published | Past EOL | EOL |
| 1.0 | 1.0.0 | Jun 23, 2014 | Not published | Past EOL | EOL |
| 2.0 | 2.0.0 | Jul 23, 2014 | Not published | Past EOL | EOL |
| 2.1 | 2.1.2 | Jul 27, 2014 | Not published | Past EOL | EOL |
| 2.2 | 2.2.6 | Aug 17, 2014 | Not published | Past EOL | EOL |
| 3.0 | 3.0.7 | Nov 11, 2014 | Not published | Past EOL | EOL |
| 4.0 | 4.0.6 | Dec 30, 2014 | Not published | Past EOL | EOL |
| 4.1 | 4.1.16 | Apr 1, 2015 | Not published | Past EOL | EOL |
| 5.0 | 5.0.21 | Aug 19, 2015 | Not published | Past EOL | EOL |
| 5.1 | 5.1.2 | Jul 12, 2016 | Not published | Past EOL | EOL |
| 5.2 | 5.2.18 | Sep 7, 2016 | Not published | Past EOL | EOL |
| 6.0 | 6.0.23 | May 6, 2017 | Not published | Past EOL | EOL |
| 7.0 | 7.0.39 | Jul 16, 2018 | Not published | Past EOL | EOL |
| 8.0 | 8.0.9 | Sep 15, 2020 | TBD | Supported | Active |
| 8.1 | 8.1.14 | Sep 26, 2020 | TBD | Supported | Active |
| 8.2 | 8.2.15 | Dec 8, 2020 | TBD | Supported | Active |
| 8.3 | 8.3.11 | May 21, 2021 | TBD | Supported | Active |
| 8.4 | 8.4.49 | Nov 24, 2021 | TBD | Supported | Active |
| 8.5 | 8.5.28 | Jan 13, 2025 | TBD | Supported | Active |
Live EOL badge for your README — updates automatically at every build.
[](https://endoflife.ai/postcss)
PostCSS lifecycle status — the real story
PostCSS, the tool for transforming CSS with JavaScript plugins (postcss/postcss on GitHub, npm package postcss); one line per minor version. Release days are the npm registry publish dates from registry.npmjs.org/postcss (read 2026-09-18), cross-checked against the project GitHub tags. PostCSS 8 (first release 8.0.0, 2020-09-15) is the current major; 8.5.28 is the latest release (2026-09-03). PostCSS 7 shipped a single minor line, 7.0.0 (2018-07-16) through 7.0.39 (2021-10-04), and the v7 branch has had no commit since that day.
End-of-life rule: the project publishes no support policy, no SECURITY.md and no end dates, and no version is deprecated on npm. The lead maintainer has stated in the project issue tracker that PostCSS 8 is the only supported version and described PostCSS 7 as unsupported (github.com/postcss/postcss/issues/1970, 2024-09-28; the same answer on backporting the CVE-2023-44270 fix at github.com/orgs/postcss/discussions/1889, 2023-10-18). Lines 7.0 and older are therefore marked end-of-life without a calendar date, because the project gives none; every 8.x minor is served as in service with no end date. In practice fixes ship in the newest 8.x release: the four 2026 advisories the project published name 8.5.10, 8.5.12, 8.5.18 and 8.5.23 as the patched versions.
Commercial context: HeroDevs Never-Ending Support lists PostCSS 7.0.x as a drop-in replacement for the postcss npm package (package @neverendingsupport/postcss, verified at docs.herodevs.com/postcss 2026-09-18). That is a commercial offering for the 7.0 line; it is not a project release.
PostCSS release and support pattern
Across the 21 release lines with a published release date, PostCSS has shipped a new line roughly every 3 months (median interval).
Of the 21 release lines tracked, 15 are past end of life and 6 are still within support; 15 are marked end of life without a published date. The newest line, 8.5, was released January 13, 2025. No end-of-life date is currently published for the 6 supported lines.
Computed from the tracked release data at every build — the figures above are the dates in the table, restated, not an editorial estimate.
What does PostCSS end of life mean for your organization?
When a version of PostCSS reaches end of life, the maintainers stop issuing security patches. Vulnerabilities discovered after this date are publicly disclosed on the National Vulnerability Database, exploit code appears on GitHub, and your systems remain permanently exposed.
The CVE blind spot: Most vulnerability scanners check for known CVEs but do not flag the accumulation of unpatched vulnerabilities in EOL software. With a zero-day, nobody knows about the vulnerability. With EOL software, the vulnerability is public — listed, rated, and often weaponized — but no patch will ever exist. This is the most dangerous gap in enterprise security posture.
Organizations running EOL PostCSS should treat it as a vulnerability class in their risk register, apply compensating controls (network segmentation, enhanced monitoring, access restriction), and prioritize migration to a supported version.
Your options when PostCSS reaches end of life
There are four realistic paths. Which one is right depends far more on how long the system needs to keep running than on the version you are on today.
| Option | Best when | Watch out for |
|---|---|---|
| Move to a supported version | The system will outlive the current version's support window and you can schedule the work | Budget for compatibility testing, not just the upgrade itself — that is where the real cost sits |
| Replace the component | The project is unmaintained, or a better-supported alternative exists | The replacement has its own lifecycle and its own end-of-life date — you are changing vendors, not escaping the problem |
| Buy extended support | Migration is genuinely underway but cannot finish before the deadline, or the workload is frozen by certification or a third-party application | A bridge, not a destination — every year purchased is a year the migration still has to happen |
| Document accepted risk | The system is isolated, short-lived, or scheduled for retirement | Only defensible with real compensating controls and a written decision — auditors treat undocumented end-of-life software as a finding |
How to choose, in one question: how many more years does this system need to run? Under a year, extended support (where it exists) is usually cheaper than an emergency migration. One to three years, migrate — support purchased repeatedly costs more than doing the project once, and the project only gets harder as the version ages. Indefinitely, migrate now and plan the next migration before it surprises you.
Worth saying plainly, because vendors selling extended support rarely will: extended support is often the more expensive choice over a multi-year horizon. It is the right answer when a deadline is genuinely unreachable, not as a default. Compare the annual fee against the one-time cost of migrating before committing to either.
Formalizing decisions like this across your estate? Our free EOL policy template is a ready-to-adopt policy with risk tiers, remediation SLAs, and audit mapping — no signup, free to use and share.
Extended Support Options
If you cannot migrate immediately, extended support vendors provide continued security patches for EOL PostCSS versions. This is a bridge, not a permanent solution — plan your migration in parallel.
PostCSS has 15 versions past end of life — security patches have stopped, but CVE disclosures haven't. The good news: extended support for PostCSS exists — vetted vendors ship security patches for years past the official date. Right now that coverage spans PostCSS 7.x. Tell us where to reach you and we'll reply with matched options and pricing guidance — or an honest "no vendor covers this."