.. index::
single: Upgrading; Patch Version
When a new patch version is released (only the last number changed), it is a release that only contains bug fixes. This means that upgrading to a new patch version is really easy.
To upgrade to a new "patch" release, read the :doc:`Upgrading a Minor Version </setup/upgrade_minor>` article. Thanks to Symfony's :doc`backwards compatibility promise </contributing/code/bc>`, it's always safe to upgrade to the latest "minor" version.
Tip
It is recommended to update to a new patch version as soon as possible, as important bugs and security vulnerabilities may be fixed in these new releases.