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springboot-4-migration

Guide Spring Boot 3.x to 4.0 migration with Gradle Kotlin DSL and version catalogs.

Updated Jan 23, 2026
Search Tags:#dependency management#migration#gradle#spring boot#jackson#kotlin dsl
One-click install
npx skills add https://github.com/pingqLIN/skill-0 --skill springboot-4-migration
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: springboot-4-migration
Source: https://github.com/pingqLIN/skill-0/tree/main/converted-skills/springboot-4-migration
Command: npx skills add https://github.com/pingqLIN/skill-0 --skill springboot-4-migration

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill streamlines the complex process of migrating Spring Boot applications from version 3.x to 4.0, addressing critical changes in dependencies, module structure, and configuration.

Core Features & Use Cases

  • Dependency Management: Guides users through updating Gradle Kotlin DSL, version catalogs, and starter dependencies.
  • Module Restructuring: Explains the shift to modular architecture and provides strategies for adapting starter dependencies.
  • Breaking Changes: Details removed features (e.g., Undertow, launch scripts) and configuration property renames (e.g., MongoDB, Jackson).
  • Use Case: A development team needs to upgrade their large Spring Boot 3.x microservices platform to Spring Boot 4.0. This Skill provides a step-by-step guide to manage the dependency updates, refactor starter configurations, and adapt to new property names, ensuring a smooth transition with minimal downtime.

Quick Start

Use the springboot-4-migration skill to update the libs.versions.toml file for migrating from Spring Boot 3.5.6 to 4.0.0.

Frequently Asked Questions about springboot-4-migration

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I migrate Spring Boot 3.x applications to 4.0 using Gradle Kotlin DSL?▼

To migrate Spring Boot 3.x applications to 4.0, update your Gradle Kotlin DSL and version catalogs to adapt starter dependencies, refactor module structures, and adjust configuration property renames for a seamless upgrade.

What breaking changes in dependencies and configuration should I expect during Spring Boot 4.0 migration?▼

Spring Boot 4.0 migration involves breaking changes like removed Undertow support, launch scripts deletion, Jackson 3 migration updates, and configuration property renames for MongoDB and Jackson to ensure seamless framework upgrades.

How do I update the libs.versions.toml version catalog for Spring Boot 4.0?▼

Update the libs.versions.toml version catalog by bumping Spring Boot dependencies from 3.5.6 to 4.0.0, adjusting starter dependencies, and aligning Jackson 3 and core framework versions within your Gradle Kotlin DSL configuration.

Does Spring Boot 4.0 migration require restructuring existing starter dependencies?▼

Yes, Spring Boot 4.0 migration requires restructuring starter dependencies to align with the new modular architecture, necessitating updates to your Gradle Kotlin DSL and version catalogs to adapt to these core framework changes.

Can I migrate a large Spring Boot 3.x microservices platform to 4.0 with minimal downtime?▼

Migrating large Spring Boot 3.x microservices platforms to 4.0 requires systematically updating dependencies, refactoring starter configurations, and adapting configuration property renames using Gradle Kotlin DSL to ensure smooth transitions with minimal downtime.

Why do my Jackson configuration properties fail after upgrading to Spring Boot 4.0?▼

Jackson configuration properties fail after upgrading to Spring Boot 4.0 due to mandatory property renames required by the Jackson 3 migration, necessitating updates to your application configuration files for seamless compatibility.

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