diff --git a/buildSrc/build.gradle.kts b/buildSrc/build.gradle.kts
index 2240915..666740d 100644
--- a/buildSrc/build.gradle.kts
+++ b/buildSrc/build.gradle.kts
@@ -14,8 +14,6 @@
  * limitations under the License.
  */
 
-import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
-
 plugins {
     `kotlin-dsl`
 }
@@ -32,8 +30,6 @@ dependencies {
     implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:1.6.20-RC2")
 }
 
-tasks.withType<KotlinCompile> {
-    kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_11.toString()
-    }
+kotlinDslPluginOptions {
+    jvmTarget.set(provider { java.targetCompatibility.toString() })
 }
diff --git a/buildSrc/src/main/kotlin/io.github.nstdio.http.ext.library-conventions.gradle.kts b/buildSrc/src/main/kotlin/io.github.nstdio.http.ext.library-conventions.gradle.kts
index 25275fa..7f911bc 100644
--- a/buildSrc/src/main/kotlin/io.github.nstdio.http.ext.library-conventions.gradle.kts
+++ b/buildSrc/src/main/kotlin/io.github.nstdio.http.ext.library-conventions.gradle.kts
@@ -25,6 +25,9 @@ plugins {
 group = "io.github.nstdio"
 
 java {
+    targetCompatibility = JavaVersion.VERSION_11
+    sourceCompatibility = JavaVersion.VERSION_11
+
     withJavadocJar()
     withSourcesJar()
 }
@@ -49,9 +52,6 @@ dependencies {
 }
 
 tasks.withType<JavaCompile>().configureEach {
-    sourceCompatibility = JavaVersion.VERSION_11.toString()
-    targetCompatibility = JavaVersion.VERSION_11.toString()
-
     options.encoding = "UTF-8"
     options.compilerArgs = listOf("-Xlint:all", "-Xlint:-deprecation")
 }