Spring Boot 4.0.8 ships with 77 fixes and dependency upgrades

Spring Boot 4.0.8 is now available from Maven Central. This patch release bundles 77 bug fixes, documentation improvements, and dependency upgrades, according to the Spring team's announcement.

As with any patch release, the focus is on stability and polish rather than new features. Teams running Spring Boot 4.0.x should plan to upgrade to pick up the fixes and keep their dependency tree current.

What's in the release

The release notes on GitHub detail the full list of changes. While the announcement doesn't break down individual fixes, the volume—77 items—suggests a mix of regressions, edge-case corrections, and library version bumps.

Dependency upgrades are a key part of any Spring Boot patch release. Staying on a supported version ensures you get the latest security patches and compatibility fixes from the underlying Spring Framework and third-party libraries.

Upgrade path

For most projects, upgrading should be as simple as bumping the Spring Boot version in your build configuration. As always, check the release notes for any breaking changes or deprecations that might affect your code.

If you're still on Spring Boot 3.x, this release is a reminder that the 4.0 line is actively maintained. Planning your migration sooner rather than later will keep you on a supported path.

Get involved

The Spring team encourages community contributions. If you're interested in helping, look for issues tagged ideal-for-contribution in the GitHub repository. For questions, Stack Overflow with the spring-boot tag is the place to ask.