diff --git a/kotlin-css/build.gradle.kts b/kotlin-css/build.gradle.kts
index f0caba50e5eeb..8a5429faa79e6 100644
--- a/kotlin-css/build.gradle.kts
+++ b/kotlin-css/build.gradle.kts
@@ -5,9 +5,14 @@ plugins {
 }
 
 kotlin {
+    jvmToolchain(11) // Do not change!
     jvm()
     js()
 
+    iosArm64()
+    iosSimulatorArm64()
+    iosX64()
+
     // Sets the device ID for iosSimulatorArm64Test
     targets.withType<KotlinNativeTargetWithSimulatorTests> {
         testRuns["test"].deviceId = "iPhone 16"