Nov 21, 2025 · Backend Development

Spring Boot 4.0 Released: Core New Features and Upgrade Guide

Spring Boot 4.0, built on Spring Framework 7.0, introduces HTTP Service Clients, native API versioning, full JSpecify null‑safety, Java 25 support, upgraded dependencies, Gradle 9 compatibility, Redis static master‑replica configuration, and drops Undertow, with migration advice to move through 3.5 first.

API VersioningGradle 9HTTP Service Clients

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Spring Boot 4.0 Released: Core New Features and Upgrade Guide