diff --git a/CHANGELOG.adoc b/CHANGELOG.adoc
index e38c61eff..cd9400ae2 100644
--- a/CHANGELOG.adoc
+++ b/CHANGELOG.adoc
@@ -7,8 +7,9 @@ This document provides a high-level view of the changes introduced by release.
 [[releasenotes]]
 == Release notes
 
-=== 0.42.3
+=== 0.43.0
 
+- JDK 21 is now necessary for developing the plugin (#1646)
 - Bump org.asciidoctor:asciidoctorj-pdf from 2.3.15 to 2.3.17 (#1634)
 - Bump org.asciidoctor:asciidoctorj-diagram from 2.3.0 to 2.3.1 (#1639)
 - Bump org.asciidoctor:asciidoctorj-diagram-plantuml from 1.2024.3 to 1.2024.5 (#1638)
diff --git a/doc/contributors-guide/modules/ROOT/pages/coder/setup-environment.adoc b/doc/contributors-guide/modules/ROOT/pages/coder/setup-environment.adoc
index 6dbeb21bb..519a3951f 100644
--- a/doc/contributors-guide/modules/ROOT/pages/coder/setup-environment.adoc
+++ b/doc/contributors-guide/modules/ROOT/pages/coder/setup-environment.adoc
@@ -7,8 +7,8 @@
 [[JDK]]
 == Choosing a Java Version and Distribution
 
-Starting with IntelliJ 2022.3, JDK 17 is required to build the plugin, as IntelliJ uses JDK 17.
-https://blog.jetbrains.com/platform/2022/08/intellij-project-migrates-to-java-17/[See the JDK 17 announcement in the JetBrains blog for details].
+Starting with IntelliJ 2024.2, JDK 21 is required to build the plugin, as IntelliJ 2024.2 uses JDK 21. The runtime version of the plugin is still compatible with JDK 17.
+https://blog.jetbrains.com/idea/2024/05/intellij-idea-2024-2-eap-2/[See the JDK 21 announcement in the JetBrains blog for details].
 
 The AsciiDoc plugin uses only language features of Java 11 to allow the built plugin to run with earlier versions of IntelliJ as well.