diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 5ec28b7..468bd26 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -2,6 +2,7 @@
 apiguardian = "1.1.2"
 junit-jupiter = "5.11.3"
 assertJ = '3.26.3'
+kotlin = '2.0.21'
 #opentest4j = '1.3.0'
 #archunit = '1.3.0'
 #mockito = '5.14.2'
@@ -9,4 +10,6 @@ assertJ = '3.26.3'
 [libraries]
 apiguardian = { module = "org.apiguardian:apiguardian-api", version.ref = "apiguardian" }
 junit-jupiter = { module = "org.junit.jupiter:junit-jupiter", version.ref = "junit-jupiter" }
-assertj-core = { module = "org.assertj:assertj-core", version.ref = "assertJ" }
\ No newline at end of file
+assertj-core = { module = "org.assertj:assertj-core", version.ref = "assertJ" }
+kotlin-gradlePlugin = { module = "org.jetbrains.kotlin:kotlin-gradle-plugin", version.ref = "kotlin" }
+kotlin-stdlib = { module = "org.jetbrains.kotlin:kotlin-stdlib", version.ref = "kotlin" }
diff --git a/gradle/plugins/build.gradle.kts b/gradle/plugins/build.gradle.kts
index cc02e63..86ba80a 100644
--- a/gradle/plugins/build.gradle.kts
+++ b/gradle/plugins/build.gradle.kts
@@ -5,3 +5,7 @@ plugins {
 repositories {
     gradlePluginPortal()
 }
+
+dependencies {
+    implementation(libs.kotlin.gradlePlugin)
+}
\ No newline at end of file
diff --git a/gradle/plugins/src/main/kotlin/buildlogic.kotlin-library-conventions.gradle.kts b/gradle/plugins/src/main/kotlin/buildlogic.kotlin-library-conventions.gradle.kts
index f719e33..5868f7b 100644
--- a/gradle/plugins/src/main/kotlin/buildlogic.kotlin-library-conventions.gradle.kts
+++ b/gradle/plugins/src/main/kotlin/buildlogic.kotlin-library-conventions.gradle.kts
@@ -1,7 +1,11 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
 plugins {
     java
     `java-library`
     id("buildlogic.publish-library")
+    id("kotlin")
 }
 
 repositories {
@@ -31,3 +35,22 @@ tasks.named<Test>("test") {
 
     testLogging.showStandardStreams = true
 }
+
+val javaVersion: String = System.getProperty("matrix.version") ?: "21"
+
+val kotlinCompilerArgs = listOf(
+    "-Xnullability-annotations=@org.jspecify.annotations:strict",
+    "-Xemit-jvm-type-annotations" // Required for annotations on type variables
+)
+
+tasks.withType<KotlinCompile> {
+    compilerOptions {
+        freeCompilerArgs.set(kotlinCompilerArgs)
+        javaParameters = true // Required to get correct parameter names in reporting
+        jvmTarget = JvmTarget.fromTarget(javaVersion)
+    }
+}
+
+kotlin {
+    jvmToolchain(21)
+}
diff --git a/kotlin-core/build.gradle.kts b/kotlin-core/build.gradle.kts
index 6e5fb67..bc0cbaf 100644
--- a/kotlin-core/build.gradle.kts
+++ b/kotlin-core/build.gradle.kts
@@ -1,6 +1,5 @@
 plugins {
     id("buildlogic.kotlin-library-conventions")
-    kotlin("jvm") version "2.0.21"
 }
 
 description = "Jqwik2 Kotlin core support"
@@ -9,16 +8,13 @@ val artifactName = "jqwik2-kotlin-core"
 
 dependencies {
     api(libs.apiguardian)
+    implementation(libs.kotlin.stdlib)
     implementation(project(":core"))
 
     testImplementation(libs.junit.jupiter)
     testImplementation(libs.assertj.core)
 }
 
-kotlin {
-    jvmToolchain(21)
-}
-
 tasks.jar {
     archiveBaseName.set(artifactName)
     archiveVersion.set("${rootProject.extra.get("jqwik2Version")}")