diff --git a/examples/kotlin/build.gradle.kts b/examples/kotlin/build.gradle.kts
index df0ed56..c44f00c 100644
--- a/examples/kotlin/build.gradle.kts
+++ b/examples/kotlin/build.gradle.kts
@@ -31,8 +31,13 @@ repositories {
 }
 
 java {
-    toolchain {
-        languageVersion.set(JavaLanguageVersion.of(17))
+    sourceCompatibility = JavaVersion.VERSION_17
+    targetCompatibility = JavaVersion.VERSION_17
+}
+
+kotlin {
+    compilerOptions {
+        jvmTarget.set(JvmTarget.JVM_17)
     }
 }