Apache Pulsar 4.1
4.1.3
Release notes ↗
Is Apache Pulsar 4.1 still supported?
No
Apache Pulsar 4.1 reached end of life on Mar 8, 2026 (7 months ago). It no longer gets updates, including security fixes. Upgrade to Apache Pulsar 5.0 (LTS) (latest 5.0.0), supported until Oct 5, 2028.
- Released
- Sep 8, 2025
- End of life
- Mar 8, 2026
7 months ago - Security Support ended
- Mar 8, 2026
7 months ago - Latest version
- 4.1.3
Feb 19, 2026
Upgrade path
The recommended upgrade is Apache Pulsar 5.0 (LTS), currently at 5.0.0 and supported until Oct 5, 2028.
Quick answers
- Is Apache Pulsar 4.1 still supported?
- No. Apache Pulsar 4.1 reached end of life on Mar 8, 2026 (7 months ago). It no longer gets updates, including security fixes. Upgrade to Apache Pulsar 5.0 (LTS) (latest 5.0.0), supported until Oct 5, 2028.
- When is Apache Pulsar 4.1 end of life?
- Apache Pulsar 4.1 reached end of life on Mar 8, 2026. It gets no more updates, including security fixes.
- What is the latest version of Apache Pulsar 4.1?
- The latest Apache Pulsar 4.1 release is 4.1.3, released on Feb 19, 2026.
- When was Apache Pulsar 4.1 released?
- Apache Pulsar 4.1 was released on Sep 8, 2025.
- What should I upgrade Apache Pulsar 4.1 to?
- The recommended upgrade is Apache Pulsar 5.0 (LTS), currently at 5.0.0 and supported until Oct 5, 2028.
Other Apache Pulsar branches
All 15 →Apache Pulsar 4.1 release history
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Keep track
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