Spring Boot 3.5.x Upgrade

Upgrade Java services to Spring Boot 3.5.9 with all required dependency updates.

When to Use

• Project uses Spring Boot 3.4.x or earlier

• Preparing for Spring Boot 4 (stay on latest or latest-1 patch of 3.5.x)

• Need features from Spring Boot 3.5.x

• Preparing for Java 25 upgrade (requires Spring Boot 3.5.x first)

• When asked to "upgrade to recommended versions"

Skill Contents

Sections

• When to Use

• Target Versions

• Version Unification

• Quick Start

• References

• Related Command

• Related Skills

Available Resources

📚 references/ - Detailed documentation

• troubleshooting

Target Versions

Component Version Notes

Spring Boot 3.5.9 Latest (min 3.5.9) - preparing for Spring Boot 4

Spring Cloud 2025.0.0 Required for Spring Boot 3.5.x

Spring Dependency Management 1.1.7 Required plugin version

Gradle 9.2.1 Recommended for all projects

JUnit 5.14.2 Testing (via BOM)

Spock 2.4-groovy-4.0 Groovy testing (use -groovy-5.0 for Java 25)

JaCoCo 0.8.14 Code coverage

SonarQube Plugin 7.2.2.6593 Code analysis

bitso-rds-iam-authn 2.0.0 If using RDS IAM

bitso-commons-redis 4.2.1 If using Redis

Version Unification

CRITICAL: Ensure Spring Boot version is defined in only ONE place.

See version-centralization.md for details on avoiding multiple version definitions.

Quick Start

1. Update Version Catalog

gradle/libs.versions.toml

[versions] springBoot = "3.5.9" springCloud = "2025.0.0" # CRITICAL for 3.5.x compatibility spock = "2.4-groovy-4.0"

[plugins] spring-boot = { id = "org.springframework.boot", version.ref = "springBoot" } spring-dependency-management = { id = "io.spring.dependency-management", version = "1.1.7" }

2. Update Gradle Wrapper

./gradlew wrapper --gradle-version=9.2.1

3. Add JUnit Platform Launcher

Required for Gradle 9.x with JUnit 5.11+:

subprojects { plugins.withType(JavaPlugin).configureEach { dependencies { testRuntimeOnly libs.junit.platform.launcher } } }

4. Update Redis Libraries (if applicable)

Check if project uses Redis:

grep -r "bitso.commons:redis|jedis" --include=".gradle" --include=".toml" .

If Redis is used, update:

[versions] bitso-commons-redis = "4.2.1" jedis4-utils = "3.0.0"

5. Validate

./gradlew clean build -x test ./gradlew test

References

Reference Content

references/troubleshooting.md Common issues and solutions

Related Command

This skill is referenced by: /upgrade-to-recommended-versions (see java/commands/ )

Related Skills

The following skills in this category depend on Spring Boot 3.5.x:

• java-25

• Java 25 upgrade (requires Spring Boot 3.5.x first)

• gradle-9

• Gradle 9 upgrade patterns