Apache ZooKeeper latest version & end-of-life dates

Latest version, released Sep 14, 2026 (3 weeks ago) Supported

3.9.6 Release notes ↗

Apache ZooKeeper currently has 2 supported releases and 4 that have reached end of life. The newest is Apache ZooKeeper 3.9, released Jul 19, 2023, now at 3.9.6. New releases come out about every 2 years, and each is supported for about 4 years, 4 months.

Support timeline

What the colors mean
3.9 3.8
Supported Today + 4 older branches below

Supported versions

BranchReleasedLatestStatusEnd of life
3.9 Jul 19, 2023 3.9.6
Sep 14, 2026		 Supported Not announced
3.8 Feb 25, 2022 3.8.7
Sep 14, 2026		 Supported Not announced
4 end-of-life versions
BranchReleasedFinal versionEnd of life
3.7 Mar 17, 2021 3.7.2 Jan 19, 2024
3.6 Feb 25, 2020 3.6.4 Dec 30, 2022
3.5 May 3, 2019 3.5.10 Jun 1, 2022
3.4 Nov 23, 2011 3.4.14 Jun 1, 2020

Quick answers

What is the latest version of Apache ZooKeeper?
The latest version of Apache ZooKeeper is 3.9.6, released on September 14, 2026.
Which versions of Apache ZooKeeper are still supported?
Apache ZooKeeper 3.9 and 3.8 are currently supported.

Release history

RSS
  1. 3.9.6
  2. 3.8.7
  3. 3.7.2
  4. 3.6.4
  5. 3.5.10
  6. 3.4.14

Every version's release date is on its branch page.

Use this data

Apache ZooKeeper latest version badge

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Package identifiers (for SBOM and vulnerability scanners)

Official release policy · Source code · Checked 1 hour ago