diff --git a/docs/src/main/asciidoc/kotlin.adoc b/docs/src/main/asciidoc/kotlin.adoc
index 2ff3227ba340a..6dd2319bcb707 100644
--- a/docs/src/main/asciidoc/kotlin.adoc
+++ b/docs/src/main/asciidoc/kotlin.adoc
@@ -301,9 +301,11 @@ allOpen { // <2>
     annotation("io.quarkus.test.junit.QuarkusTest")
 }
 
-tasks.withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile> {
-    kotlinOptions.jvmTarget = JavaVersion.VERSION_11.toString()
-    kotlinOptions.javaParameters = true
+kotlin {
+	compilerOptions {
+		jvmTarget = JvmTarget.JVM_21
+		javaParameters = true
+	}
 }
 
 ----
diff --git a/independent-projects/tools/base-codestarts/src/main/resources/codestarts/quarkus/buildtool/gradle-kotlin-dsl/kotlin/build.tpl.qute.gradle.kts b/independent-projects/tools/base-codestarts/src/main/resources/codestarts/quarkus/buildtool/gradle-kotlin-dsl/kotlin/build.tpl.qute.gradle.kts
index 3005bf160cd0b..4865ac51577f9 100644
--- a/independent-projects/tools/base-codestarts/src/main/resources/codestarts/quarkus/buildtool/gradle-kotlin-dsl/kotlin/build.tpl.qute.gradle.kts
+++ b/independent-projects/tools/base-codestarts/src/main/resources/codestarts/quarkus/buildtool/gradle-kotlin-dsl/kotlin/build.tpl.qute.gradle.kts
@@ -25,7 +25,9 @@ allOpen {
     annotation("io.quarkus.test.junit.QuarkusTest")
 }
 
-tasks.withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile> {
-    kotlinOptions.jvmTarget = JavaVersion.VERSION_{java.version}.toString()
-    kotlinOptions.javaParameters = true
+kotlin {
+    compilerOptions {
+        jvmTarget = JvmTarget.JVM_21
+        javaParameters = true
+    }
 }
diff --git a/integration-tests/devtools/src/test/resources/__snapshots__/KotlinSerializationCodestartTest/testGradleKotlinContent/build.gradle.kts b/integration-tests/devtools/src/test/resources/__snapshots__/KotlinSerializationCodestartTest/testGradleKotlinContent/build.gradle.kts
index 29e2753624387..a6fe8f38513c3 100644
--- a/integration-tests/devtools/src/test/resources/__snapshots__/KotlinSerializationCodestartTest/testGradleKotlinContent/build.gradle.kts
+++ b/integration-tests/devtools/src/test/resources/__snapshots__/KotlinSerializationCodestartTest/testGradleKotlinContent/build.gradle.kts
@@ -43,7 +43,9 @@ allOpen {
     annotation("io.quarkus.test.junit.QuarkusTest")
 }
 
-tasks.withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile> {
-    kotlinOptions.jvmTarget = JavaVersion.VERSION_17.toString()
-    kotlinOptions.javaParameters = true
+kotlin {
+    compilerOptions {
+        jvmTarget = JvmTarget.JVM_21
+        javaParameters = true
+    }
 }
diff --git a/integration-tests/gradle/src/main/resources/conditional-dependencies-kotlin/build.gradle.kts b/integration-tests/gradle/src/main/resources/conditional-dependencies-kotlin/build.gradle.kts
index 007458ade94b9..781337262c1b9 100644
--- a/integration-tests/gradle/src/main/resources/conditional-dependencies-kotlin/build.gradle.kts
+++ b/integration-tests/gradle/src/main/resources/conditional-dependencies-kotlin/build.gradle.kts
@@ -45,7 +45,9 @@ allOpen {
     annotation("io.quarkus.test.junit.QuarkusTest")
 }
 
-tasks.withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile> {
-    kotlinOptions.jvmTarget = JavaVersion.VERSION_17.toString()
-    kotlinOptions.javaParameters = true
+kotlin {
+    compilerOptions {
+        jvmTarget = JvmTarget.JVM_21
+        javaParameters = true
+    }
 }