Erlang 20 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Erlang 20 reached end of life on 21 Jun 2020. It no longer receives security fixes.
Support timeline
Official dates from the Erlang release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 21 Jun 2017 | — |
| End of life | 21 Jun 2020 | 6.1 years ago |
| Active support ended | 19 Jun 2018 | security fixes only after this |
| Latest release | 20.3.8.26 · 27 Feb 2020 | final |
Where to go from 20
Recommended target: Erlang 29 (supported until 11 May 2029).
The newest actively supported branch is Erlang 29 (latest release 29.0.5).
Frequently asked questions
Is Erlang 20 still safe to use?
Erlang 20 reached end of life on 21 Jun 2020, 2,240 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download Erlang 20?
Yes — the final release (20.3.8.26) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade Erlang 20 to?
Upgrade to Erlang 29, the newest actively supported branch (supported until 11 May 2029).