Question 1

What happens when Phoenix Framework reaches end of life?

Accepted Answer

When Phoenix Framework reaches end of life, it stops receiving security patches, bug fixes, and new features. Currently, 5 Phoenix Framework versions are already EOL. The latest supported version is Phoenix Framework 1.8. Running an EOL version exposes your systems to unpatched security vulnerabilities with no official fix available.

Question 2

Is Phoenix Framework 1.8 still supported?

Accepted Answer

Yes. Phoenix Framework 1.8 is actively supported. It receives security patches and bug fixes. Check the version table above for the full list of supported Phoenix Framework releases and their exact end-of-life dates.

Question 3

Is it safe to use Phoenix Framework after end of life?

Accepted Answer

No. Running Phoenix Framework after EOL is not safe for production systems. Once a version reaches end of life, newly discovered CVEs are published publicly but never patched — leaving your systems permanently exposed. The only safe path is upgrading to an actively supported Phoenix Framework release.

Question 4

How to upgrade from Phoenix Framework 1.4 to Phoenix Framework 1.x?

Accepted Answer

To upgrade Phoenix Framework from 1.4 to 1.8: (1) review the official migration guide for breaking changes, (2) test your application against the new version in a staging environment, (3) update dependencies that have version constraints, (4) run your full test suite, (5) deploy with a rollback plan. The earlier you start, the more time you have to resolve compatibility issues before EOL.

Question 5

When is the next Phoenix Framework LTS version?

Accepted Answer

Not all Phoenix Framework releases have a designated LTS status. Check the version table above — LTS releases are marked with an "LTS" badge. Refer to the official Phoenix Framework release policy for information on upcoming long-term support versions.

Question 6

How long does Phoenix Framework support each version?

Accepted Answer

On average, Phoenix Framework supports each release for approximately 40 months (~3.3 years).  The exact EOL date for each version is listed in the table above.

Version	Released	Active support	EOL date	Until EOL	Latest	CVEs	Status
1.8	Aug 5, 2025	—	No	—	1.8.7	—	Active
1.7	Feb 24, 2023	Aug 5, 2025	No	—	1.7.23	—	Active
1.6	Aug 26, 2021	Feb 24, 2023	No	—	1.6.16	—	Active
1.5	Apr 22, 2020	Aug 26, 2021	No	—	1.5.14	—	Active
1.4	Nov 7, 2018	Apr 22, 2020	Aug 5, 2025	308d ago	1.4.18	—	EOL
1.3	Jul 28, 2017	Nov 7, 2018	Feb 24, 2023	1201d ago	1.3.5	—	EOL
1.2	Jun 23, 2016	Jul 28, 2017	Jul 28, 2017	3238d ago	1.2.5	—	EOL
1.1	Dec 16, 2015	Jun 23, 2016	May 15, 2017	3312d ago	1.1.9	—	EOL
1.0	Aug 28, 2015	Dec 16, 2015	Mar 14, 2017	3374d ago	1.0.6	—	EOL

Phoenix Framework End of Life Dates

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