Since Kotlin 2.0.0, we ship the following types of releases:

Language releases (2.x.0) that bring major changes in the language and include tooling updates. Released once in 6 months.
Tooling releases (2.x.20) that are shipped between language releases and include updates in the tooling, performance improvements, and bug fixes. Released in 3 months after corresponding language release.
Bug fix releases (2.x.yz) that include bug fixes for tooling releases. There is no exact release schedule for these releases.

For each language and tooling release, we also ship several preview (EAP) versions for you to try new features before they are released. See Early Access Preview for details.

If you want to be notified about new Kotlin releases, subscribe to the Kotlin newsletter, follow Kotlin on X, or enable the Watch | Custom | Releases option on the Kotlin GitHub repository.

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Update to a new Kotlin version

To upgrade your project to a new release, you need to update your build script file. For example, to update to Kotlin %kotlinVersion%, change the version of the Kotlin Gradle plugin in your build.gradle(.kts) file:

plugins {
    // Replace `<...>` with the plugin name appropriate for your target environment
    kotlin("<...>") version "%kotlinVersion%"
    // For example, if your target environment is JVM:
    // kotlin("jvm") version "%kotlinVersion%"
    // If your target is Kotlin Multiplatform:
    // kotlin("multiplatform") version "%kotlinVersion%"
}

plugins {
    // Replace `<...>` with the plugin name appropriate for your target environment
    id 'org.jetbrains.kotlin.<...>' version '%kotlinVersion%'
    // For example, if your target environment is JVM: 
    // id 'org.jetbrains.kotlin.jvm' version '%kotlinVersion%'
    // If your target is Kotlin Multiplatform:
    // id 'org.jetbrains.kotlin.multiplatform' version '%kotlinVersion%'
}

If you have projects created with earlier Kotlin versions, change the Kotlin version in your projects and update kotlinx libraries if necessary.

If you are migrating to the new language release, Kotlin plugin's migration tools will help you with the migration.

IDE support

Even with the release of the K2 compiler, IntelliJ IDEA and Android Studio still use the previous compiler by default for code analysis, code completion, highlighting, and other IDE-related features.

Starting from 2024.1, IntelliJ IDEA can use the new K2 compiler to analyze your code with its K2 mode. To enable it, go to Settings | Languages & Frameworks | Kotlin and select the Enable K2 mode option.

The K2 mode is in Beta from 2024.2. We are working on stability and code analysis improvements, but not all IDE features are supported yet.

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After enabling K2 mode, you may notice differences in IDE analysis due to changes in compiler behavior. Learn how the new K2 compiler differs from the previous one in the migration guide.

Kotlin release compatibility

Learn more about types of Kotlin releases and their compatibility

Release details

The following table lists details of the latest Kotlin releases:

You can also try Early Access Preview (EAP) versions of Kotlin.

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Build info Build highlights

2.0.20

Released: August 22, 2024

Files

releases.md

Latest commit

History

releases.md

File metadata and controls

Update to a new Kotlin version

IDE support

Kotlin release compatibility

Release details