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Title: Upgrade Jackson 3.0.3 to 3.1.4 by wjglerum · Pull Request #1057 · modelcontextprotocol/java-sdk · GitHub

Open Graph Title: Upgrade Jackson 3.0.3 to 3.1.4 by wjglerum · Pull Request #1057 · modelcontextprotocol/java-sdk

X Title: Upgrade Jackson 3.0.3 to 3.1.4 by wjglerum · Pull Request #1057 · modelcontextprotocol/java-sdk

Description: Motivation and Context Upgrades jackson3.version from 3.0.3 to 3.1.4 and jackson-annotations.version from 2.20 to 2.21. This aligns Jackson to the latest LTS and fixes security warnings, see https://mvnrepository.com/artifact/tools.jackson.core/jackson-databind The annotations bump is required: Jackson databind 3.1's JacksonAnnotationIntrospector references @JsonSerializeAs, which was added in jackson-annotations 2.21. With 2.20 on the classpath, any Jackson 3 mapper fails at runtime with NoClassDefFoundError. How Has This Been Tested? Ran the existing test suite locally with ./mvnw -pl mcp-core -am test; all 339 tests pass. Breaking Changes No breaking changes. This is a dependency version bump only. Types of changes Bug fix (non-breaking change which fixes an issue) New feature (non-breaking change which adds functionality) Breaking change (fix or feature that would cause existing functionality to change) Documentation update Checklist I have read the MCP Documentation My code follows the repository's style guidelines New and existing tests pass locally I have added appropriate error handling I have added or updated documentation as needed

Open Graph Description: Motivation and Context Upgrades jackson3.version from 3.0.3 to 3.1.4 and jackson-annotations.version from 2.20 to 2.21. This aligns Jackson to the latest LTS and fixes security warnings, see https:...

X Description: Motivation and Context Upgrades jackson3.version from 3.0.3 to 3.1.4 and jackson-annotations.version from 2.20 to 2.21. This aligns Jackson to the latest LTS and fixes security warnings, see https:...

Opengraph URL: https://github.com/modelcontextprotocol/java-sdk/pull/1057

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7c655e8 Upgrade Jackson 3 to 3.1.4 wjglerum Jul 6, 2026 https://github.com/modelcontextprotocol/java-sdk/pull/1057/commits/7c655e81f6bc439ee3910096cdda5d00dd3dfee0
f4c561b Merge branch 'main' into upgrade-jackson3-314 wjglerum Jul 8, 2026 https://github.com/modelcontextprotocol/java-sdk/pull/1057/commits/f4c561b5517bc2e5e37227f9e601d5ac03ec4193
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