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Apache Cassandra 4.0 lifecycle

Current status

standard supportlow

Apache Cassandra 4.0 is currently in standard support.

Official lifecycle source: Apache Cassandra Downloads

Support phase
standard support
End of life
Not officially published
Latest release
4.0.21
Released
7 Aug 2026

At a glance

Version line
4.0
Initial release
22 Jul 2021
Lifecycle phase
standard support
Latest stable
4.0.21
Latest release date
7 Aug 2026
EOL
Not officially published
Risk
low
Releases tracked
22

Lifecycle timeline

Phases from published LifecyclePeriod records. Missing phases are not inferred.

  1. Release

    22 Jul 2021

  2. standard supportcurrent

    22 Jul 2021 → —

    Source: Apache Cassandra Downloads

Apache Cassandra 4.0 is currently in standard support.

Upgrade options

Newer supported Apache Cassandra version lines from CompatHub lifecycle data. Compatibility and security context use existing evidence only.

You are on Apache Cassandra 4.0

Supported

Supported upgrade options

Open full upgrade planner for Apache Cassandra 4.0 →

Latest release

4.0.21

Released 7 Aug 2026 · stable

https://github.com/apache/cassandra/releases/tag/cassandra-4.0.21

Previous releases

  • 4.0.20

    17 Mar 2026

  • 4.0.19

    14 Oct 2025

  • 4.0.18

    22 May 2025

Release history

22 concrete releases tracked for this line.

VersionRelease dateChannelSource
4.0.217 Aug 2026stableSource
4.0.2017 Mar 2026stableSource
4.0.1914 Oct 2025stableSource
4.0.1822 May 2025stableSource
4.0.176 Feb 2025stableSource
4.0.1627 Jan 2025stableSource
4.0.1513 Nov 2024stableSource
4.0.1418 Sept 2024stableSource
4.0.132 May 2024stableSource
4.0.1217 Jan 2024stableSource
4.0.1112 Jul 2023stableSource
4.0.1025 May 2023stableSource
4.0.911 Apr 2023stableSource
4.0.87 Feb 2023stableSource
4.0.719 Oct 2022stableSource
4.0.618 Aug 2022stableSource
4.0.512 Jul 2022stableSource
4.0.46 May 2022stableSource
4.0.313 Feb 2022stableSource
4.0.27 Feb 2022stableSource
4.0.130 Aug 2021stableSource
4.0.022 Jul 2021stableSource

Release activity

Total releases
22
Last 30 days
1
Last 90 days
1
Avg. interval
~88 days
Most recent
7 Aug 2026

Should I use this version?

Suitable for new deployments

Apache Cassandra 4.0 is currently supported (standard support).

Version comparison

Compact comparison against the nearest relevant release lines.

4.05.0
Statusstandard supportstandard support
Latest release4.0.215.0.9
EOLNot publishedNot published
Risklowlow

Compatibility

Evidence-backed compatibility results involving Apache Cassandra 4.0. Only combinations CompatHub can evaluate from upstream sources are listed.

Compatible targets

Open Compatibility Explorer →

Sources

Where this information comes from.

Lifecycle sources

Release sources

Data coverage

Last checked = last successful upstream check. Latest source update = when upstream content last changed.

Releases tracked
22
Lifecycle periods
1
EOL
Not officially published
Provenance records
2
Data last checked
2 Sept 2026
Latest source update
2 Sept 2026

EOL: Not officially published

Other Apache Cassandra versions