OpenSearch 1 End of Life
Support dates and upgrade guidance — rebuilt from live data.
End of Life
OpenSearch 1 reached end of life on 6 May 2025. It no longer receives security fixes.
517 days without security patches
Recommended action: upgrade to OpenSearch 3. Check your version# Preferred method
Support timeline
Official dates from the OpenSearch release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 12 Jul 2021 | 5y 3mo ago |
| Active Development ended | 26 May 2022 | security fixes only after this |
| Maintenance Support ended | 6 May 2025 | 1y 5mo ago |
| Latest release | 1.3.20 · 11 Dec 2024 | final |
Where to go from 1
Recommended target: OpenSearch 3.
The newest actively supported branch is OpenSearch 3 (latest release 3.9.0).
Frequently asked questions
Is OpenSearch 1 still safe to use?
OpenSearch 1 reached end of life on 6 May 2025, 517 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download OpenSearch 1?
Yes — the final release (1.3.20) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade OpenSearch 1 to?
Upgrade to OpenSearch 3, the newest actively supported branch.