diff --git a/build.gradle.kts b/build.gradle.kts
index 0c6d6b0..7f43d91 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -14,10 +14,10 @@ tasks.withType<JavaCompile> {
 }
 
 java {
-    sourceCompatibility = JavaVersion.VERSION_17
-    targetCompatibility = JavaVersion.VERSION_17
+    sourceCompatibility = JavaVersion.VERSION_21
+    targetCompatibility = JavaVersion.VERSION_21
     toolchain {
-        languageVersion = JavaLanguageVersion.of(17)
+        languageVersion = JavaLanguageVersion.of(21)
     }
 }