Apache Pulsar 4.0 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Supported
Apache Pulsar 4.0 is actively supported. It reaches end of life on 21 Oct 2026.
73 days of security support left
4.0.13 latest release
90% of this branch's supported lifetime has elapsed — 21 Oct 2024 → 21 Oct 2026.
Support timeline
Official dates from the Apache Pulsar release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 21 Oct 2024 | — |
| End of life (scheduled) | 21 Oct 2026 | in 73 days |
| Extended support ends | 21 Oct 2027 | 438 days left |
| Latest release | 4.0.13 · 3 Aug 2026 | current |
How much runway a newer branch buys
Moving to Apache Pulsar 4.2 extends security support by about -27 days.
| Branch | End of life | Days left | vs 4.0 |
|---|---|---|---|
| Apache Pulsar 4.2 | 24 Sept 2026 | 46 | -27 days |
| Apache Pulsar 4.0 | 21 Oct 2026 | 73 | this branch |
Frequently asked questions
When does Apache Pulsar 4.0 reach end of life?
Apache Pulsar 4.0 reaches end of life on 21 Oct 2026 — 73 days from now. After that date it receives no security fixes.
Is Apache Pulsar 4.0 still supported?
Yes. Apache Pulsar 4.0 is currently maintained. Latest release: 4.0.13, published 3 Aug 2026.
What happens when Apache Pulsar 4.0 reaches end of life?
Security fixes stop. After 21 Oct 2026 this branch receives no further updates under standard support, though extended support runs to 21 Oct 2027.
How long do I have to upgrade from Apache Pulsar 4.0?
73 days. Moving to Apache Pulsar 4.2 instead buys roughly -27 more days of security support.