diff --git a/build.gradle b/build.gradle
index 454a75e4..80a86c71 100644
--- a/build.gradle
+++ b/build.gradle
@@ -59,6 +59,11 @@ configurations {
   zipArchive
 }
 
+java {
+    targetCompatibility = JavaVersion.VERSION_21
+    sourceCompatibility = JavaVersion.VERSION_21
+}
+
 publishing {
     publications {
         pluginZip(MavenPublication) { publication ->