end-of-life.org

Symfony 6.4 End of Life

Support dates and upgrade guidance — rebuilt from live data.

Supported

Symfony 6.4 is actively supported. It reaches end of life on 30 Nov 2027.

478 days of security support left
6.4.43 latest release
67% of this branch's supported lifetime has elapsed — 29 Nov 2023 → 30 Nov 2027.
Check your versioncomposer show | grep "symfony/"

Support timeline

Official dates from the Symfony release process.

MilestoneDateStatus
Initial release29 Nov 2023—
End of life (scheduled)30 Nov 2027 in 478 days
Active support ended30 Nov 2026 security fixes only after this
Latest release6.4.43 · 29 Jul 2026 current

How much runway a newer branch buys

Moving to Symfony 8.1 extends security support by about -303 days.

BranchEnd of lifeDays leftvs 6.4
Symfony 8.1 31 Jan 2027 175 -303 days
Symfony 7.4 30 Nov 2029 1,209 +731 days
Symfony 6.4 30 Nov 2027 478 this branch
Symfony 5.4 28 Feb 2029 934 +456 days

Frequently asked questions

When does Symfony 6.4 reach end of life?

Symfony 6.4 reaches end of life on 30 Nov 2027 — 478 days from now. After that date it receives no security fixes.

Is Symfony 6.4 still supported?

Yes. Symfony 6.4 is currently maintained. Latest release: 6.4.43, published 29 Jul 2026.

What happens when Symfony 6.4 reaches end of life?

Security fixes stop. After 30 Nov 2027 this branch receives no further updates under standard support.

How long do I have to upgrade from Symfony 6.4?

478 days. Moving to Symfony 8.1 instead buys roughly -303 more days of security support.

All Symfony versions

8.1 supported 8.0 EOL 2026 7.4 supported 7.3 EOL 2026 7.2 EOL 2025 7.1 EOL 2025 7.0 EOL 2024 6.4 supported 6.3 EOL 2024 6.2 EOL 2023 6.1 EOL 2023 6.0 EOL 2023 5.4 supported 5.3 EOL 2022 5.2 EOL 2021 5.1 EOL 2021 5.0 EOL 2020 4.4 EOL 2023 4.3 EOL 2020 4.2 EOL 2020 4.1 EOL 2019 4.0 EOL 2019 3.4 EOL 2021 3.3 EOL 2018 3.2 EOL 2018 3.1 EOL 2017 3.0 EOL 2017 2.8 EOL 2019 2.7 EOL 2019 2.3 EOL 2017