diff --git a/README.md b/README.md
index 6547ccf79..b5ac57c91 100644
--- a/README.md
+++ b/README.md
@@ -35,7 +35,7 @@ Gluon Scene Builder is frequently released, and this is only required in case yo
 
 These are the requisites:
 
-* A recent version of [JDK 11 or later](https://www.oracle.com/technetwork/java/javase/downloads/index.html) for building 'master' branch
+* A recent version of [JDK 21 or later](https://www.oracle.com/technetwork/java/javase/downloads/index.html) for building 'master' branch
 * A recent version of [JDK 8](https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html) for building '8u-dev' branch
 
 ### How to build Scene Builder ###
@@ -110,4 +110,4 @@ There will be a report for each sub-project, one for `app` and one for `kit`.
 * Kit: `kit/target/site/checkstyle.html`
 * App: `app/target/site/checkstyle.html`
 
-This project makes use of [EditorConfig](https://editorconfig.org/) which is [directly supported](https://editorconfig.org/#pre-installed) by IntelliJ IDEA. There are plugins for NetBeans, Eclipse and Visual Studio and [more](https://editorconfig.org/#download). EditorConfig ensures via configuration in `.editorconfig` file, that the proper indentation is used.
\ No newline at end of file
+This project makes use of [EditorConfig](https://editorconfig.org/) which is [directly supported](https://editorconfig.org/#pre-installed) by IntelliJ IDEA. There are plugins for NetBeans, Eclipse and Visual Studio and [more](https://editorconfig.org/#download). EditorConfig ensures via configuration in `.editorconfig` file, that the proper indentation is used.
diff --git a/pom.xml b/pom.xml
index 40fe20d87..72da039a7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -16,7 +16,7 @@
     </modules>
 
     <properties>
-        <java.version>23</java.version>
+        <java.version>21</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
         <maven.compiler.release>${java.version}</maven.compiler.release>