diff --git a/build.gradle b/build.gradle
index 53aa7c348..1801101e1 100644
--- a/build.gradle
+++ b/build.gradle
@@ -232,7 +232,7 @@ allprojects {
             // get recommended versions from the platform project
             api platform(rootProject)
 
-            javafx group: 'org.openjfx', name: 'javafx-base', version: '20.0.2', classifier: javaFxPlatform
+            javafx group: 'org.openjfx', name: 'javafx-base', version: '21', classifier: javaFxPlatform
             javafx group: 'org.openjfx', name: 'javafx-graphics', version: '20.0.2', classifier: javaFxPlatform
             javafx group: 'org.openjfx', name: 'javafx-fxml', version: '20.0.2', classifier: javaFxPlatform
             javafx group: 'org.openjfx', name: 'javafx-controls', version: '20.0.2', classifier: javaFxPlatform