Jackson Release 2.24

Jackson Version 2.24 is under development as of November 7, 2026

This wiki page gives a list of links to all changes (with brief descriptions) that will be included.

Version is under development (under branch 2.x).

It will likely be designated as Long-Term-Support (LTS) since 2.21 is the previous LTS.

No release yet

Same as Jackson 2.23, SDK 26

Same as Jackson 2.23; mostly Java 8, with some modules requiring later JDKs:

• jackson-datatype-hibernate: JDK 17 for some modules (Hibernate 7)
• jackson-jakarta-providers: JDK 11

Same as Jackson 2.23

No changes.

None.

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Maintenance (bug fixes).

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No changes

No changes

• #6309: NPE serializing an Enum whose toString() returns null
• #6326: NPE in SerializationContext.findKeySerializer() when SerializerFactory.createKeySerializer() returns null
• #6443: JDK deserialization of a JsonNode with a negative length prefix throws NegativeArraySizeException instead of an IOException

• #105: Bump org.json:json dependency to latest, 20260814