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Apache ZooKeeperEnd of Life (EOL) Dates & Support Status
Active
MiddlewareLatest Version: 3.9.6Latest Release: Sep 14, 2026
Apache ZooKeeper is a centralized service for distributed configuration, synchronization, and naming registry.
Support summary
Apache ZooKeeper currently has supported cycles. Track the next EOL date and validate upgrades before your change window.
What do EOL and support statuses mean?Next EOL
No announced EOL date is currently listed.
Supported cycles
2
0 lts
Versions
6
Latest Version
3.9.6
Active Support
2
EOL
4
Lifecycle Timeline
Nov 23, 2011As of Sep 27, 2026
3.9Active · Date not announced
3.8Active · Date not announced
3.7EOL · Jan 19, 2024
3.6EOL · Dec 30, 2022
3.5EOL · Jun 1, 2022
3.4EOL · Jun 1, 2020
ActiveSecurityEOLHistorical phase unknown
Bars show history up to the snapshot date. Gray intervals lack dated support boundaries; arrows indicate an unannounced EOL date, not a support guarantee.
Versions
| Release | Release Date | Active Support | EOL | Latest Version | LTS | Status |
|---|---|---|---|---|---|---|
| 3.9 | Jul 19, 2023 | Maintained | Date not announced | 3.9.6 | No | Active |
| 3.8 | Feb 25, 2022 | Maintained | Date not announced | 3.8.7 | No | Active |
| 3.7 | Mar 17, 2021 | Jul 19, 2023 | Jan 19, 2024 | 3.7.2 | No | EOL |
| 3.6 | Feb 25, 2020 | Mar 7, 2022 | Dec 30, 2022 | 3.6.4 | No | EOL |
| 3.5 | May 3, 2019 | Mar 27, 2021 | Jun 1, 2022 | 3.5.10 | No | EOL |
| 3.4 | Nov 23, 2011 | Mar 27, 2020 | Jun 1, 2020 | 3.4.14 | No | EOL |
Data sources
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Show Apache ZooKeeper's live support status in your README, docs, or dashboard. The badge is a static SVG served from eol.wiki and follows the lifecycle data above.
Markdown
[](https://eol.wiki/zookeeper/)HTML
<a href="https://eol.wiki/zookeeper/"><img src="https://eol.wiki/badge/zookeeper.svg" alt="Apache ZooKeeper end-of-life status" height="20"></a>Frequently Asked Questions
Which versions of Apache ZooKeeper have reached end of life?
The following Apache ZooKeeper versions have reached end of life and no longer receive security updates: 3.7, 3.6, 3.5, 3.4. It is recommended to upgrade to a supported version.
Is it safe to continue using Apache ZooKeeper 3.7?
Apache ZooKeeper 3.7 has reached end of life and no longer receives security patches or bug fixes. Continuing to use it may expose your systems to known vulnerabilities. We strongly recommend upgrading to a supported version.
What is the latest version of Apache ZooKeeper?
The latest version of Apache ZooKeeper is 3.9.6, released in the 3.9 release cycle.
How many versions of Apache ZooKeeper are currently supported?
Apache ZooKeeper currently has 2 actively supported version(s): 3.9, 3.8.
When does Apache ZooKeeper 3.9 reach end of life?
Apache ZooKeeper 3.9 does not have a specific end-of-life date announced yet.
What should I do when Apache ZooKeeper reaches end of life?
When a Apache ZooKeeper version reaches end of life, you should: 1) Plan your migration to a supported version as soon as possible. 2) Review the release notes for breaking changes. 3) Test your applications thoroughly in a staging environment. 4) Update your dependencies to ensure compatibility with the new version.