diff --git a/build.gradle b/build.gradle
index 28f6235..e8b4202 100644
--- a/build.gradle
+++ b/build.gradle
@@ -10,15 +10,15 @@ description = 'Scheduler Service Backend API Server'
 
 java {
 	toolchain {
-		// languageVersion = JavaLanguageVersion.of(21)
+		languageVersion = JavaLanguageVersion.of(21)
 		// vendor = JvmVendorSpec.ADOPTOPENJDK
 	}
 }
 
-tasks.withType(JavaCompile) {
-	sourceCompatibility = '21'
-	targetCompatibility = '21'
-}
+// tasks.withType(JavaCompile) {
+// 	sourceCompatibility = '21'
+// 	targetCompatibility = '21'
+// }
 configurations {
 	compileOnly {
 		extendsFrom annotationProcessor