Releases

Kotlin 2.3.20 Released

The Kotlin 2.3.20 release is out! Here are the main highlights:

• Gradle: Compatibility with Gradle 9.3.0 and Kotlin/JVM compilation uses the Build tools API by default.
• Maven: Simplified setup for Kotlin projects.
• Kotlin compiler plugins: Lombok is Alpha and improved JPA support in the kotlin.plugin.jpa plugin.
• Language: Support for name-based destructuring declarations.
• Standard library: New API for creating immutable copies of Map.Entry.
• Kotlin/Native: New interoperability mode for C and Objective-C libraries.

For the complete list of changes, refer to What’s new in Kotlin 2.3.20 or the release notes on GitHub.

How to install Kotlin 2.3.20

The latest version of Kotlin is included in the latest versions of IntelliJ IDEA and Android Studio.

To update to the new Kotlin version, make sure your IDE is updated to the latest version and change the Kotlin version to 2.3.20 in your build scripts.

If you need the command-line compiler, download it from the GitHub release page.

If you run into any problems:

• Find help on Slack (get an invite).
• Report issues to our issue tracker, YouTrack.

Stay up to date with the latest Kotlin features! Subscribe to receive Kotlin updates by filling out the form at the bottom of this post. ⬇️

Special thanks to our EAP Champions

• Alexander Nozik
• Benoit Lubek
• Bernd Prünster
• David Lopez
• Dayan Ruben
• Florian Schreiber
• Johannes Svensson
• Josh Stagg
• Łukasz Wasylkowski
• Rick Clephas
• Sechaba Mofokeng
• Yang
• Yuri Geronimus
• Zac Sweers

Further reading

• What’s new in Kotlin 2.3.20 documentation
• Kotlin 2.3 compatibility guide
• Kotlin EAP Champions
• What’s new in IntelliJ IDEA 2026.1