diff --git a/CHANGELOG.md b/CHANGELOG.md
index b5bfa9d..9dc415b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,16 @@ Notable changes are documented in this file, whose format follows [Keep a Change
 
 ## [Unreleased]
 
+## [0.9.0] - 2024-07-08
+
+> [!IMPORTANT]
+> Version 0.9.0 and higher of kotlinx-resources target Kotlin 2.0 are incompatible with Kotlin 1.9.
+> Only lower versions (even if published in the future), alongside the `k1` branch, target Kotlin 1.9.
+
+### Added
+
+- Support for Kotlin 2.0.0 (#115 - thanks @DRSchlaubi!)
+
 ## [0.4.2] - 2024-07-03
 
 ### Fixed
diff --git a/README.md b/README.md
index ac5dbde..b50ad5d 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ Kotlin Multiplatform (KMP) plugin and library that add support for reading resou
 
 The plugin and a library work in tandem to provide a unified API across platforms for reading resources from each source set's `resources` folder.
 
-## Usage
+## Setup
 
 List the plugin in your `build.gradle.kts`:
 
@@ -41,7 +41,14 @@ kotlin {
 }
 ```
 
-Once that's done, a `Resource` class becomes available in all test sources, with a simple API:
+> [!IMPORTANT]
+> The latest version targets Kotlin 2.0 and is incompatible with Kotlin 1.9.
+> On 2.0 and above, use the latest version available.
+> On 1.9, use the latest version _below v0.9.0_.
+
+## Usage
+
+Once setup is done done, a `Resource` class becomes available in all test sources, with a simple API:
 
 ```kotlin
 class Resource(path: String) {