NumPy 1.21 End of Life
Support dates and upgrade guidance — rebuilt from live data.
NumPy 1.21 reached end of life on 23 Jun 2023. It no longer receives security fixes.
Support timeline
Official dates from the NumPy release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 22 Jun 2021 | — |
| End of life | 23 Jun 2023 | 3.1 years ago |
| Latest release | 1.21.6 · 12 Apr 2022 | final |
Where to go from 1.21
Recommended target: NumPy 2.5 (supported until 22 Jun 2028).
The newest actively supported branch is NumPy 2.5 (latest release 2.5.1).
Frequently asked questions
Is NumPy 1.21 still safe to use?
NumPy 1.21 reached end of life on 23 Jun 2023, 1,143 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download NumPy 1.21?
Yes — the final release (1.21.6) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade NumPy 1.21 to?
Upgrade to NumPy 2.5, the newest actively supported branch (supported until 22 Jun 2028).