On behalf of the Spring Boot team and everyone that has contributed, I am pleased to announce that Spring Boot 3.4.0 has been released and is available from Maven Central.

This release adds a significant number of new features and improvements. For full upgrade instructions and new and noteworthy features please see the release notes.

What's new in 3.4

The highlights of the 3.4 release include:

• Structured logging
• Support for defining additional beans of the same type as those that are auto-configured
• Expanded virtual thread support
• Improved support for Docker Compose and Testcontainers
• Numerous Actuator enhancements, including info and health information for SSL certificates
• Improved image building capabilities, including out-of-the-box support for ARM
• Auto-configuration for MockMvcTester, an AssertJ-based alternative to MockMvc

Dependency upgrades

Spring Boot 3.4 moves to new versions of several Spring projects and we’ve also upgraded to the latest stable releases of other third-party libraries wherever possible. Please see the release notes for details.

Other changes

There are many other changes and improvements that are documented in the release notes. You can also find a list of deprecated classes and methods that we plan to remove in the future.

Thank you

We want to take this opportunity to again thank all our users and contributors.

If you're interested in helping out, check out the "ideal for contribution" tag in the issue repository. If you have general questions, please ask at stackoverflow.com using the spring-boot tag.

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