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[#release-notes-2-22-1]
== 2.22.1

Release date:: 2023-12-22

This release contains only dependency upgrades and bug fixes, which do not change the behavior of the artifacts.

While maintaining compatibility with Java 8, the artifacts in this release where generated using JDK 17, unlike version `2.22.0` that used JDK 11.


[#release-notes-2-22-1-fixed]
=== Fixed

* Mark `JdkMapAdapterStringMap` as frozen if map is immutable. (https://github.com/apache/logging-log4j2/issues/2098[2098])
* Fix NPE in `CloseableThreadContext`. (https://github.com/apache/logging-log4j2/pull/1426[1426])
* Use the module name of Conversant Media Disruptor from version `1.2.16+` of the library.
* Fix NPE in `RollingFileManager`. (https://github.com/apache/logging-log4j2/pull/1645[1645])
* Fix `log4j-to-slf4j` JPMS and OSGi descriptors. (https://github.com/apache/logging-log4j2/pull/1983[1983])
* Workaround a Coursier/Ivy dependency resolution bug affecting `log4j-slf4j-impl` and `log4j-mongodb3`. (https://github.com/apache/logging-log4j2/pull/2065[2065])

[#release-notes-2-22-1-updated]
=== Updated

* Bumped the minimum Java version required for the build to Java 17. Runtime requirements remain unchanged. (https://github.com/apache/logging-log4j2/issues/2021[2021])
* Update `com.github.luben:zstd-jni` to version `1.5.5-11` (https://github.com/apache/logging-log4j2/pull/2030[2030])
* Update `com.google.guava:guava` to version `33.0.0-jre` (https://github.com/apache/logging-log4j2/pull/2110[2110])
* Update `commons-codec:commons-codec` to version `1.16.0` (https://github.com/apache/logging-log4j2/pull/2042[2042])
* Update `commons-io:commons-io` to version `2.15.1` (https://github.com/apache/logging-log4j2/pull/2034[2034])
* Update `commons-logging:commons-logging` to version `1.3.0` (https://github.com/apache/logging-log4j2/pull/2050[2050])
* Update `io.netty:netty-bom` to version `4.1.104.Final` (https://github.com/apache/logging-log4j2/pull/2095[2095])
* Update `org.apache.commons:commons-compress` to version `1.25.0` (https://github.com/apache/logging-log4j2/pull/2045[2045])
* Update `org.apache.commons:commons-dbcp2` to version `2.11.0` (https://github.com/apache/logging-log4j2/pull/2048[2048])
* Update `org.apache.commons:commons-lang3` to version `3.14.0` (https://github.com/apache/logging-log4j2/pull/2047[2047])
* Update `org.apache.commons:commons-pool2` to version `2.12.0` (https://github.com/apache/logging-log4j2/pull/2057[2057])
* Update `org.apache.kafka:kafka-clients` to version `3.6.1` (https://github.com/apache/logging-log4j2/pull/2068[2068])
* Update `org.apache.logging:logging-parent` to version `10.5.0` (https://github.com/apache/logging-log4j2/pull/2119[2119])
* Update `org.jctools:jctools-core` to version `4.0.2` (https://github.com/apache/logging-log4j2/pull/1984[1984])
* Update `org.springframework.boot:spring-boot` to version `2.7.18` (https://github.com/apache/logging-log4j2/pull/1998[1998])
* Update `org.springframework.cloud:spring-cloud-dependencies` to version `2021.0.9` (https://github.com/apache/logging-log4j2/pull/2109[2109])
