Project: jackson-module-kotlin
Versions: 3.x (for earlier see VERSION-2.x)

Module that adds support for Kotlin-specific data types, constructs.

Active Maintainers:

* WrongWrong (@k163377) (since 2.15)

Co-maintainers:

* Tatu Saloranta (@cowtowncoder) -- at-large Jackson Author, helps from time to time

Former maintainers:

* Dmitry Spikhalskiy (@Spikhalskiy)
* Drew Stephens (@dinomite)
* Jayson Minard (@apatrida) -- original Module Author
* Vyacheslav Artemyev (@viartemev)

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=== Releases ===
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3.2.0 (not yet released)

#1113: The deprecated `NewStrictNullChecks` option has been removed and unified under the `StrictNullChecks` option.

3.1.0 (23-Feb-2026)

#1077: Increase deprecation level of NewStrictNullChecks due to version upgrade
 (@k163377)

3.0.4 (21-Jan-2026)
3.0.3 (28-Nov-2025)
3.0.2 (07-Nov-2025)
3.0.1 (21-Oct-2025)

No changes since 3.0.0

3.0.0 (03-Oct-2025)

#952: The `isRequired` result from `kotlin-module` no longer overrides the result from
  `JacksonAnnotationIntrospector` or other `AnnotationIntrospector`s.
  Tests have confirmed that `@JsonProperty(required = true)` for nullable parameters has been
  changed to be determined as `required`.
#887: Change 3.0 to use `module-info.java` directly [JSTEP-11]
#936: `StrictNullChecks` and `SingletonSupport` are now enabled by default
- Minimum Java baseline: Java 17
- Branch rename "master" -> "3.x" [JSTEP-12]