diff --git a/build.gradle.kts b/build.gradle.kts
index 616260d..e9a7bc3 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -25,6 +25,7 @@ kotlin.explicitApiWarning()
 
 dependencies {
     api(libs.kotlin.gradle)
+    api("org.gradle.toolchains:foojay-resolver:0.7.0")
     implementation(libs.binary.compatibility.validator)
     implementation(libs.changelog.gradle)
     implementation(libs.dokka.gradle)
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index c6ba410..a01b656 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,6 +1,6 @@
 [versions]
-tools = "0.15.0-kotlin-1.9.20-Beta2"
-kotlin = "1.9.20-Beta2"
+tools = "0.15.0-kotlin-1.9.20-RC"
+kotlin = "1.9.20-RC"
 # https://github.com/Kotlin/kotlinx-atomicfu
 atomicfu = "0.22.0"
 # https://github.com/Kotlin/binary-compatibility-validator
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index db9a6b8..e411586 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.3-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/src/main/kotlin/space/kscience/gradle/KScienceExtension.kt b/src/main/kotlin/space/kscience/gradle/KScienceExtension.kt
index 3e04ae3..db82c59 100644
--- a/src/main/kotlin/space/kscience/gradle/KScienceExtension.kt
+++ b/src/main/kotlin/space/kscience/gradle/KScienceExtension.kt
@@ -1,6 +1,5 @@
 package space.kscience.gradle
 
-import org.gradle.api.Action
 import org.gradle.api.Project
 import org.gradle.api.file.DuplicatesStrategy
 import org.gradle.api.plugins.ApplicationPlugin
@@ -17,7 +16,10 @@ import org.jetbrains.kotlin.gradle.dsl.KotlinProjectExtension
 import org.jetbrains.kotlin.gradle.plugin.KotlinCompilation
 import org.jetbrains.kotlin.gradle.plugin.KotlinDependencyHandler
 import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinNativeTarget
-import org.jetbrains.kotlin.gradle.targets.js.dsl.*
+import org.jetbrains.kotlin.gradle.targets.js.dsl.ExperimentalWasmDsl
+import org.jetbrains.kotlin.gradle.targets.js.dsl.KotlinJsBrowserDsl
+import org.jetbrains.kotlin.gradle.targets.js.dsl.KotlinJsTargetDsl
+import org.jetbrains.kotlin.gradle.targets.js.dsl.KotlinWasmJsTargetDsl
 import org.jetbrains.kotlin.gradle.targets.jvm.KotlinJvmTarget
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 import org.jetbrains.kotlinx.jupyter.api.plugin.tasks.JupyterApiResourcesTask
@@ -179,13 +181,6 @@ public open class KScienceExtension(public val project: Project) {
             }
         }
 
-        project.pluginManager.withPlugin("org.jetbrains.kotlin.js") {
-            project.configure<KotlinJsProjectExtension> {
-                sourceSets.getByName(sourceSet ?: "test") {
-                    dependencies(dependencyBlock)
-                }
-            }
-        }
 
         project.pluginManager.withPlugin("org.jetbrains.kotlin.multiplatform") {
             project.configure<KotlinMultiplatformExtension> {
@@ -373,7 +368,7 @@ public open class KScienceMppExtension(project: Project) : KScienceExtension(pro
             project.configure<KotlinMultiplatformExtension> {
                 jvm {
                     compilations.all {
-                        compilerOptions {
+                        compilerOptions.configure {
                             freeCompilerArgs.addAll(defaultKotlinJvmArgs)
                         }
                     }
@@ -421,8 +416,11 @@ public open class KScienceMppExtension(project: Project) : KScienceExtension(pro
         }
     }
 
+    /**
+     * Add Wasm/Js target
+     */
     @OptIn(ExperimentalWasmDsl::class)
-    public fun wasm(block: KotlinWasmTargetDsl.() -> Unit = {}) {
+    public fun wasm(block: KotlinWasmJsTargetDsl.() -> Unit = {}) {
 //        if (project.requestPropertyOrNull("kscience.wasm.disabled") == "true") {
 //            project.logger.warn("Wasm target is disabled with 'kscience.wasm.disabled' property")
 //            return
@@ -434,7 +432,7 @@ public open class KScienceMppExtension(project: Project) : KScienceExtension(pro
                     browser {
                         testTask {
                             useKarma {
-                                this.webpackConfig.experiments.add("topLevelAwait")
+                                webpackConfig.experiments.add("topLevelAwait")
                                 useChromeHeadlessWasmGc()
                                 useConfigDirectory(project.projectDir.resolve("karma.config.d").resolve("wasm"))
                             }
@@ -469,14 +467,14 @@ public open class KScienceMppExtension(project: Project) : KScienceExtension(pro
         browserConfig: KotlinJsBrowserDsl.() -> Unit = {},
     ) {
         js {
-            binaries.executable()
             browser {
-                webpackTask(Action {
+                webpackTask {
                     mainOutputFileName.set(bundleName)
-                })
+                }
                 browserConfig()
             }
             jsConfig()
+            binaries.executable()
         }
         jvm {
             val processResourcesTaskName =
diff --git a/src/main/kotlin/space/kscience/gradle/KScienceMPPlugin.kt b/src/main/kotlin/space/kscience/gradle/KScienceMPPlugin.kt
index cb02302..72858c1 100644
--- a/src/main/kotlin/space/kscience/gradle/KScienceMPPlugin.kt
+++ b/src/main/kotlin/space/kscience/gradle/KScienceMPPlugin.kt
@@ -10,6 +10,7 @@ import org.jetbrains.dokka.gradle.DokkaPlugin
 import org.jetbrains.kotlin.gradle.dsl.KotlinMultiplatformExtension
 import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinMultiplatformPlugin
 import space.kscience.gradle.internal.applySettings
+import space.kscience.gradle.internal.defaultKotlinCommonArgs
 
 public open class KScienceMPPlugin : Plugin<Project> {
     override fun apply(project: Project): Unit = project.run {
@@ -23,23 +24,29 @@ public open class KScienceMPPlugin : Plugin<Project> {
         registerKScienceExtension(::KScienceMppExtension)
 
         configure<KotlinMultiplatformExtension> {
-
             sourceSets {
-                getByName("commonMain"){
+                getByName("commonMain") {
                     dependencies {
                         api(project.dependencies.platform("org.jetbrains.kotlin-wrappers:kotlin-wrappers-bom:${KScienceVersions.jsBom}"))
                     }
                 }
-                getByName("commonTest"){
+                getByName("commonTest") {
                     dependencies {
                         implementation(kotlin("test-common"))
                         implementation(kotlin("test-annotations-common"))
                     }
                 }
+                all {
+                    languageSettings.applySettings()
+                }
             }
 
-            sourceSets.all {
-                languageSettings.applySettings()
+            targets.all {
+                compilations.all {
+                    kotlinOptions{
+                        freeCompilerArgs += defaultKotlinCommonArgs
+                    }
+                }
             }
 
             if (explicitApi == null) explicitApiWarning()
diff --git a/src/main/kotlin/space/kscience/gradle/internal/common.kt b/src/main/kotlin/space/kscience/gradle/internal/common.kt
index 096e0a2..1008006 100644
--- a/src/main/kotlin/space/kscience/gradle/internal/common.kt
+++ b/src/main/kotlin/space/kscience/gradle/internal/common.kt
@@ -13,6 +13,10 @@ internal val defaultKotlinJvmArgs: List<String> = listOf(
     /* "-Xjdk-release=${KScienceVersions.JVM_TARGET}"*/
 )
 
+internal val defaultKotlinCommonArgs: List<String> = listOf(
+    "-Xexpect-actual-classes"
+)
+
 internal fun resolveKotlinVersion(): KotlinVersion {
     val (major, minor, patch) = KScienceVersions.kotlinVersion.split(".", "-")
     return KotlinVersion(major.toInt(), minor.toInt(), patch.toInt())