diff --git a/examples/kotlin-multiplatform/build.gradle b/examples/kotlin-multiplatform/build.gradle
index af6e7597..958bf2ba 100644
--- a/examples/kotlin-multiplatform/build.gradle
+++ b/examples/kotlin-multiplatform/build.gradle
@@ -30,6 +30,12 @@ kotlin {
 
     applyDefaultHierarchyTemplate()
 
+    targets.configureEach {
+        compilations.configureEach {
+            kotlinOptions.allWarningsAsErrors = true
+        }
+    }
+
     sourceSets.configureEach {
         languageSettings {
             progressiveMode = true
diff --git a/runtime/build.gradle b/runtime/build.gradle
index 2f5892c5..32dd1f5d 100644
--- a/runtime/build.gradle
+++ b/runtime/build.gradle
@@ -45,7 +45,10 @@ kotlin {
 
     targets.configureEach {
         compilations.configureEach {
-            kotlinOptions.freeCompilerArgs += "-Xexpect-actual-classes"
+            compilerOptions.options.with {
+                allWarningsAsErrors.set(true)
+                freeCompilerArgs.add("-Xexpect-actual-classes")
+            }
         }
     }
 
@@ -54,8 +57,6 @@ kotlin {
         resources.srcDirs = ["$it.name/resources"]
         languageSettings {
             progressiveMode = true
-            optIn('kotlin.experimental.ExperimentalNativeApi')
-            optIn("kotlinx.cinterop.ExperimentalForeignApi")
         }
     }
 
@@ -108,3 +109,11 @@ if (project.findProperty("publication_repository") == "space") {
 tasks.withType(KotlinNativeCompile).matching { it.name.toLowerCase().contains("test") }.configureEach {
     it.dependsOn(tasks.withType(Sign))
 }
+
+tasks.withType(KotlinNativeCompile).configureEach {
+    compilerOptions.freeCompilerArgs.addAll(
+            "-opt-in=kotlin.experimental.ExperimentalNativeApi",
+            "-opt-in=kotlin.native.runtime.NativeRuntimeApi",
+            "-opt-in=kotlinx.cinterop.ExperimentalForeignApi",
+    )
+}
diff --git a/runtime/nativeMain/src/kotlinx/benchmark/native/NativeExecutor.kt b/runtime/nativeMain/src/kotlinx/benchmark/native/NativeExecutor.kt
index 55ba6f8d..dff5de0b 100644
--- a/runtime/nativeMain/src/kotlinx/benchmark/native/NativeExecutor.kt
+++ b/runtime/nativeMain/src/kotlinx/benchmark/native/NativeExecutor.kt
@@ -1,7 +1,7 @@
 package kotlinx.benchmark.native
 
 import kotlinx.benchmark.*
-import kotlin.native.internal.GC
+import kotlin.native.runtime.GC
 import kotlin.time.*
 
 class NativeExecutor(
@@ -218,7 +218,6 @@ class NativeExecutor(
         return getStackTrace().joinToString("\n") + "\nCause: ${nested.message}\n" + nested.stacktrace()
     }
 
-    @OptIn(ExperimentalTime::class)
     private inline fun measure(
         cycles: Int,
         nativeGCAfterIteration: Boolean,
@@ -239,7 +238,6 @@ class NativeExecutor(
         return duration.toDouble(DurationUnit.NANOSECONDS) / cycles
     }
 
-    @OptIn(ExperimentalTime::class)
     private inline fun <T> measureWarmup(
         name: String,
         config: BenchmarkConfiguration,