UpgradingEdit this page
Warning: You are browsing the documentation for Symfony 2.3, which is no longer maintained.
Read the updated version of this page for Symfony 6.3 (the current stable version).
So a new Symfony release has come out and you want to upgrade, great! Fortunately, because Symfony protects backwards-compatibility very closely, this should be quite easy.
There are three types of upgrades, all needing a little different preparation:
- Upgrading a Patch Version (e.g. 2.6.0 to 2.6.1)
- Upgrading a Minor Version (e.g. 2.5.3 to 2.6.1)
- Upgrading a Major Version (e.g. 2.7.0 to 3.0.0)
- Upgrading a Third-Party Bundle for a Major Symfony Version
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