diff --git a/kotlin-native/runtime/src/main/kotlin/kotlin/reflect/KCallable.kt b/kotlin-native/runtime/src/main/kotlin/kotlin/reflect/KCallable.kt
index 0f2096b55e9..624013db688 100644
--- a/kotlin-native/runtime/src/main/kotlin/kotlin/reflect/KCallable.kt
+++ b/kotlin-native/runtime/src/main/kotlin/kotlin/reflect/KCallable.kt
@@ -10,10 +10,6 @@ package kotlin.reflect
  *
  * @param R return type of the callable.
  */
-@Suppress(
-        "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_SUPERTYPES_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING",
-        "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING"
-) // Can be dropped after bootstrap update
 public actual interface KCallable<out R> : KAnnotatedElement {
     /**
      * The name of this callable as it was declared in the source code.
@@ -29,6 +25,5 @@ public actual interface KCallable<out R> : KAnnotatedElement {
     /**
      * The type of values returned by this callable.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     public val returnType: KType
 }
diff --git a/kotlin-native/runtime/src/main/kotlin/kotlin/reflect/KClass.kt b/kotlin-native/runtime/src/main/kotlin/kotlin/reflect/KClass.kt
index bf36da19d59..db6f89572e9 100644
--- a/kotlin-native/runtime/src/main/kotlin/kotlin/reflect/KClass.kt
+++ b/kotlin-native/runtime/src/main/kotlin/kotlin/reflect/KClass.kt
@@ -13,7 +13,6 @@ package kotlin.reflect
  *
  * @param T the type of the class.
  */
-@Suppress("ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_SUPERTYPES_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING") // Can be dropped after bootstrap update
 public actual interface KClass<T : Any> : KDeclarationContainer, KAnnotatedElement, KClassifier {
     /**
      * The simple name of the class as it was declared in the source code,
diff --git a/libraries/stdlib/js/src/kotlin/collections/AbstractMutableCollection.kt b/libraries/stdlib/js/src/kotlin/collections/AbstractMutableCollection.kt
index b38545c436c..5d52027b687 100644
--- a/libraries/stdlib/js/src/kotlin/collections/AbstractMutableCollection.kt
+++ b/libraries/stdlib/js/src/kotlin/collections/AbstractMutableCollection.kt
@@ -12,7 +12,6 @@ package kotlin.collections
  *
  * @param E the type of elements contained in the collection. The collection is invariant in its element type.
  */
-@Suppress("ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING", "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_SUPERTYPES_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING") // Can be dropped after bootstrap update
 public actual abstract class AbstractMutableCollection<E> protected actual constructor() : AbstractCollection<E>(), MutableCollection<E> {
 
     actual abstract override fun add(element: E): Boolean
@@ -57,7 +56,6 @@ public actual abstract class AbstractMutableCollection<E> protected actual const
         }
     }
 
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @Deprecated("Provided so that subclasses inherit this function", level = DeprecationLevel.HIDDEN)
     @JsName("toJSON")
     protected fun toJSON(): Any = this.toArray()
@@ -67,7 +65,6 @@ public actual abstract class AbstractMutableCollection<E> protected actual const
      * This method is called every time when a mutating method is called on this mutable collection.
      * Mutable collections that are built (frozen) must throw `UnsupportedOperationException`.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     internal open fun checkIsMutable(): Unit { }
 }
 
diff --git a/libraries/stdlib/js/src/kotlin/collections/AbstractMutableList.kt b/libraries/stdlib/js/src/kotlin/collections/AbstractMutableList.kt
index 1850fe9c98d..bb8c65944d9 100644
--- a/libraries/stdlib/js/src/kotlin/collections/AbstractMutableList.kt
+++ b/libraries/stdlib/js/src/kotlin/collections/AbstractMutableList.kt
@@ -17,12 +17,7 @@ package kotlin.collections
  *
  * @param E the type of elements contained in the list. The list is invariant in its element type.
  */
-@Suppress(
-    "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING",
-    "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_SUPERTYPES_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING"
-) // Can be dropped after bootstrap update
 public actual abstract class AbstractMutableList<E> protected actual constructor() : AbstractMutableCollection<E>(), MutableList<E> {
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     protected var modCount: Int = 0
 
     abstract override fun add(index: Int, element: E): Unit
@@ -86,7 +81,6 @@ public actual abstract class AbstractMutableList<E> protected actual constructor
     /**
      * Removes the range of elements from this list starting from [fromIndex] and ending with but not including [toIndex].
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     protected open fun removeRange(fromIndex: Int, toIndex: Int) {
         val iterator = listIterator(fromIndex)
         repeat(toIndex - fromIndex) {
diff --git a/libraries/stdlib/js/src/kotlin/collections/AbstractMutableMap.kt b/libraries/stdlib/js/src/kotlin/collections/AbstractMutableMap.kt
index 64cbb661072..36cbaeaa421 100644
--- a/libraries/stdlib/js/src/kotlin/collections/AbstractMutableMap.kt
+++ b/libraries/stdlib/js/src/kotlin/collections/AbstractMutableMap.kt
@@ -18,12 +18,9 @@ package kotlin.collections
  * @param K the type of map keys. The map is invariant in its key type.
  * @param V the type of map values. The map is invariant in its value type.
  */
-@Suppress("ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING", "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_SUPERTYPES_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING") // Can be dropped after bootstrap update
 public actual abstract class AbstractMutableMap<K, V> protected actual constructor() : AbstractMap<K, V>(), MutableMap<K, V> {
 
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     internal open fun createKeysView(): MutableSet<K> = HashMapKeysDefault(this)
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     internal open fun createValuesView(): MutableCollection<V> = HashMapValuesDefault(this)
 
     private var keysView: MutableSet<K>? = null
@@ -68,6 +65,5 @@ public actual abstract class AbstractMutableMap<K, V> protected actual construct
      * This method is called every time when a mutating method is called on this mutable map.
      * Mutable maps that are built (frozen) must throw `UnsupportedOperationException`.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     internal open fun checkIsMutable() {}
 }
diff --git a/libraries/stdlib/js/src/kotlin/collections/AbstractMutableSet.kt b/libraries/stdlib/js/src/kotlin/collections/AbstractMutableSet.kt
index df11715a2e2..42c8df2cef0 100644
--- a/libraries/stdlib/js/src/kotlin/collections/AbstractMutableSet.kt
+++ b/libraries/stdlib/js/src/kotlin/collections/AbstractMutableSet.kt
@@ -9,7 +9,6 @@ package kotlin.collections
  *
  * @param E the type of elements contained in the set. The set is invariant in its element type.
  */
-@Suppress("ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING", "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_SUPERTYPES_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING") // Can be dropped after bootstrap update
 public actual abstract class AbstractMutableSet<E> protected actual constructor() : AbstractMutableCollection<E>(), MutableSet<E> {
 
     /**
diff --git a/libraries/stdlib/jvm/runtime/kotlin/TypeAliases.kt b/libraries/stdlib/jvm/runtime/kotlin/TypeAliases.kt
index 82a57d9e640..4a7cc770ad6 100644
--- a/libraries/stdlib/jvm/runtime/kotlin/TypeAliases.kt
+++ b/libraries/stdlib/jvm/runtime/kotlin/TypeAliases.kt
@@ -28,5 +28,4 @@ package kotlin
 @Suppress("NO_ACTUAL_CLASS_MEMBER_FOR_EXPECTED_CLASS")
 @SinceKotlin("1.3") public actual typealias ConcurrentModificationException = java.util.ConcurrentModificationException
 
-@Suppress("ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING", "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_SUPERTYPES_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING") // Can be dropped after bootstrap update
 @SinceKotlin("1.1") public actual typealias Comparator<T> = java.util.Comparator<T>
diff --git a/libraries/stdlib/jvm/runtime/kotlin/text/TypeAliases.kt b/libraries/stdlib/jvm/runtime/kotlin/text/TypeAliases.kt
index 3613ac7ee01..d71ea556b50 100644
--- a/libraries/stdlib/jvm/runtime/kotlin/text/TypeAliases.kt
+++ b/libraries/stdlib/jvm/runtime/kotlin/text/TypeAliases.kt
@@ -7,7 +7,6 @@
 
 package kotlin.text
 
-@Suppress("ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING", "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_SUPERTYPES_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING") // Can be dropped after bootstrap update
 @SinceKotlin("1.1") public actual typealias Appendable = java.lang.Appendable
 
 @Suppress("ACTUAL_WITHOUT_EXPECT") // TODO: some supertypes are missing
diff --git a/libraries/stdlib/jvm/src/kotlin/collections/AbstractMutableCollection.kt b/libraries/stdlib/jvm/src/kotlin/collections/AbstractMutableCollection.kt
index 81f17afee60..0d0539639b0 100644
--- a/libraries/stdlib/jvm/src/kotlin/collections/AbstractMutableCollection.kt
+++ b/libraries/stdlib/jvm/src/kotlin/collections/AbstractMutableCollection.kt
@@ -13,7 +13,6 @@ import java.util.AbstractCollection
  * @param E the type of elements contained in the collection. The collection is invariant in its element type.
  */
 @SinceKotlin("1.1")
-@Suppress("ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING", "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_SUPERTYPES_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING") // Can be dropped after bootstrap update
 public actual abstract class AbstractMutableCollection<E> protected actual constructor() : MutableCollection<E>, AbstractCollection<E>() {
     /**
      * Adds the specified element to the collection.
diff --git a/libraries/stdlib/jvm/src/kotlin/collections/AbstractMutableList.kt b/libraries/stdlib/jvm/src/kotlin/collections/AbstractMutableList.kt
index 192876ab5a9..1290ad7b0b2 100644
--- a/libraries/stdlib/jvm/src/kotlin/collections/AbstractMutableList.kt
+++ b/libraries/stdlib/jvm/src/kotlin/collections/AbstractMutableList.kt
@@ -13,7 +13,6 @@ import java.util.AbstractList
  * @param E the type of elements contained in the list. The list is invariant in its element type.
  */
 @SinceKotlin("1.1")
-@Suppress("ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING", "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_SUPERTYPES_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING") // Can be dropped after bootstrap update
 public actual abstract class AbstractMutableList<E> protected actual constructor() : MutableList<E>, AbstractList<E>() {
     /**
      * Replaces the element at the specified position in this list with the specified element.
diff --git a/libraries/stdlib/jvm/src/kotlin/collections/AbstractMutableMap.kt b/libraries/stdlib/jvm/src/kotlin/collections/AbstractMutableMap.kt
index 6c89c22b58e..7d7d9676c17 100644
--- a/libraries/stdlib/jvm/src/kotlin/collections/AbstractMutableMap.kt
+++ b/libraries/stdlib/jvm/src/kotlin/collections/AbstractMutableMap.kt
@@ -16,7 +16,6 @@ import java.util.AbstractMap
  * @param V the type of map values. The map is invariant in its value type.
  */
 @SinceKotlin("1.1")
-@Suppress("ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING", "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_SUPERTYPES_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING") // Can be dropped after bootstrap update
 public actual abstract class AbstractMutableMap<K, V> protected actual constructor() : MutableMap<K, V>, AbstractMap<K, V>() {
     /**
      * Associates the specified [value] with the specified [key] in the map.
diff --git a/libraries/stdlib/jvm/src/kotlin/collections/AbstractMutableSet.kt b/libraries/stdlib/jvm/src/kotlin/collections/AbstractMutableSet.kt
index 264da9e63c9..7707b8a44db 100644
--- a/libraries/stdlib/jvm/src/kotlin/collections/AbstractMutableSet.kt
+++ b/libraries/stdlib/jvm/src/kotlin/collections/AbstractMutableSet.kt
@@ -13,7 +13,6 @@ import java.util.AbstractSet
  * @param E the type of elements contained in the set. The set is invariant in its element type.
  */
 @SinceKotlin("1.1")
-@Suppress("ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING", "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_SUPERTYPES_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING") // Can be dropped after bootstrap update
 public actual abstract class AbstractMutableSet<E> protected actual constructor() : MutableSet<E>, AbstractSet<E>() {
     /**
      * Adds the specified element to the set.
diff --git a/libraries/stdlib/jvm/src/kotlin/reflect/KCallable.kt b/libraries/stdlib/jvm/src/kotlin/reflect/KCallable.kt
index 3aa08bfe314..e38b5122481 100644
--- a/libraries/stdlib/jvm/src/kotlin/reflect/KCallable.kt
+++ b/libraries/stdlib/jvm/src/kotlin/reflect/KCallable.kt
@@ -10,7 +10,6 @@ package kotlin.reflect
  *
  * @param R return type of the callable.
  */
-@Suppress("ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING", "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_SUPERTYPES_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING") // Can be dropped after bootstrap update
 public actual interface KCallable<out R> : KAnnotatedElement {
     /**
      * The name of this callable as it was declared in the source code.
@@ -28,19 +27,16 @@ public actual interface KCallable<out R> : KAnnotatedElement {
      * If this callable requires a `this` instance or an extension receiver parameter,
      * they come first in the list in that order.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     public val parameters: List<KParameter>
 
     /**
      * The type of values returned by this callable.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     public val returnType: KType
 
     /**
      * The list of type parameters of this callable.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.1")
     public val typeParameters: List<KTypeParameter>
 
@@ -49,7 +45,6 @@ public actual interface KCallable<out R> : KAnnotatedElement {
      * Throws an exception if the number of specified arguments is not equal to the size of [parameters],
      * or if their types do not match the types of the parameters.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     public fun call(vararg args: Any?): R
 
     /**
@@ -57,41 +52,35 @@ public actual interface KCallable<out R> : KAnnotatedElement {
      * If a parameter is not found in the mapping and is not optional (as per [KParameter.isOptional]),
      * or its type does not match the type of the provided value, an exception is thrown.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     public fun callBy(args: Map<KParameter, Any?>): R
 
     /**
      * Visibility of this callable, or `null` if its visibility cannot be represented in Kotlin.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.1")
     public val visibility: KVisibility?
 
     /**
      * `true` if this callable is `final`.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.1")
     public val isFinal: Boolean
 
     /**
      * `true` if this callable is `open`.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.1")
     public val isOpen: Boolean
 
     /**
      * `true` if this callable is `abstract`.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.1")
     public val isAbstract: Boolean
 
     /**
      * `true` if this is a suspending function.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.3")
     public val isSuspend: Boolean
 }
diff --git a/libraries/stdlib/jvm/src/kotlin/reflect/KClass.kt b/libraries/stdlib/jvm/src/kotlin/reflect/KClass.kt
index d01e64e86b9..d8e9cc9cc30 100644
--- a/libraries/stdlib/jvm/src/kotlin/reflect/KClass.kt
+++ b/libraries/stdlib/jvm/src/kotlin/reflect/KClass.kt
@@ -13,7 +13,6 @@ package kotlin.reflect
  *
  * @param T the type of the class.
  */
-@Suppress("ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING", "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_SUPERTYPES_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING") // Can be dropped after bootstrap update
 public actual interface KClass<T : Any> : KDeclarationContainer, KAnnotatedElement, KClassifier {
     /**
      * The simple name of the class as it was declared in the source code,
@@ -31,25 +30,21 @@ public actual interface KClass<T : Any> : KDeclarationContainer, KAnnotatedEleme
      * All functions and properties accessible in this class, including those declared in this class
      * and all of its superclasses. Does not include constructors.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     override val members: Collection<KCallable<*>>
 
     /**
      * All constructors declared in this class.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     public val constructors: Collection<KFunction<T>>
 
     /**
      * All classes declared inside this class. This includes both inner and static nested classes.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     public val nestedClasses: Collection<KClass<*>>
 
     /**
      * The instance of the object declaration, or `null` if this class is not an object declaration.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     public val objectInstance: T?
 
     /**
@@ -61,49 +56,42 @@ public actual interface KClass<T : Any> : KDeclarationContainer, KAnnotatedEleme
     /**
      * The list of type parameters of this class. This list does *not* include type parameters of outer classes.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.1")
     public val typeParameters: List<KTypeParameter>
 
     /**
      * The list of immediate supertypes of this class, in the order they are listed in the source code.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.1")
     public val supertypes: List<KType>
 
     /**
      * The list of the immediate subclasses if this class is a sealed class, or an empty list otherwise.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.3")
     public val sealedSubclasses: List<KClass<out T>>
 
     /**
      * Visibility of this class, or `null` if its visibility cannot be represented in Kotlin.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.1")
     public val visibility: KVisibility?
 
     /**
      * `true` if this class is `final`.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.1")
     public val isFinal: Boolean
 
     /**
      * `true` if this class is `open`.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.1")
     public val isOpen: Boolean
 
     /**
      * `true` if this class is `abstract`.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.1")
     public val isAbstract: Boolean
 
@@ -112,7 +100,6 @@ public actual interface KClass<T : Any> : KDeclarationContainer, KAnnotatedEleme
      * See the [Kotlin language documentation](https://kotlinlang.org/docs/reference/sealed-classes.html)
      * for more information.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.1")
     public val isSealed: Boolean
 
@@ -122,7 +109,6 @@ public actual interface KClass<T : Any> : KDeclarationContainer, KAnnotatedEleme
      * [data object](https://kotlinlang.org/docs/object-declarations.html#data-objects)
      * in the Kotlin language documentation.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.1")
     public val isData: Boolean
 
@@ -131,7 +117,6 @@ public actual interface KClass<T : Any> : KDeclarationContainer, KAnnotatedEleme
      * See the [Kotlin language documentation](https://kotlinlang.org/docs/reference/nested-classes.html#inner-classes)
      * for more information.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.1")
     public val isInner: Boolean
 
@@ -140,21 +125,18 @@ public actual interface KClass<T : Any> : KDeclarationContainer, KAnnotatedEleme
      * See the [Kotlin language documentation](https://kotlinlang.org/docs/reference/object-declarations.html#companion-objects)
      * for more information.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.1")
     public val isCompanion: Boolean
 
     /**
      * `true` if this class is a Kotlin functional interface.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.4")
     public val isFun: Boolean
 
     /**
      * `true` if this class is a value class.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.5")
     public val isValue: Boolean
 
diff --git a/libraries/stdlib/jvm/src/kotlin/reflect/KFunction.kt b/libraries/stdlib/jvm/src/kotlin/reflect/KFunction.kt
index 753b6ef7d63..41c9c2d25bb 100644
--- a/libraries/stdlib/jvm/src/kotlin/reflect/KFunction.kt
+++ b/libraries/stdlib/jvm/src/kotlin/reflect/KFunction.kt
@@ -8,14 +8,12 @@ package kotlin.reflect
 /**
  * Represents a function with introspection capabilities.
  */
-@Suppress("ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING", "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_SUPERTYPES_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING") // Can be dropped after bootstrap update
 public actual interface KFunction<out R> : KCallable<R>, Function<R> {
     /**
      * `true` if this function is `inline`.
      * See the [Kotlin language documentation](https://kotlinlang.org/docs/reference/inline-functions.html)
      * for more information.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.1")
     public val isInline: Boolean
 
@@ -24,7 +22,6 @@ public actual interface KFunction<out R> : KCallable<R>, Function<R> {
      * See the [Kotlin language documentation](https://kotlinlang.org/docs/reference/java-interop.html#using-jni-with-kotlin)
      * for more information.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.1")
     public val isExternal: Boolean
 
@@ -33,7 +30,6 @@ public actual interface KFunction<out R> : KCallable<R>, Function<R> {
      * See the [Kotlin language documentation](https://kotlinlang.org/docs/reference/operator-overloading.html)
      * for more information.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.1")
     public val isOperator: Boolean
 
@@ -42,7 +38,6 @@ public actual interface KFunction<out R> : KCallable<R>, Function<R> {
      * See the [Kotlin language documentation](https://kotlinlang.org/docs/reference/functions.html#infix-notation)
      * for more information.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.1")
     public val isInfix: Boolean
 
diff --git a/libraries/stdlib/jvm/src/kotlin/reflect/KProperty.kt b/libraries/stdlib/jvm/src/kotlin/reflect/KProperty.kt
index 20b47e44e7d..0bfad68f930 100644
--- a/libraries/stdlib/jvm/src/kotlin/reflect/KProperty.kt
+++ b/libraries/stdlib/jvm/src/kotlin/reflect/KProperty.kt
@@ -15,14 +15,12 @@ package kotlin.reflect
  *
  * @param V the type of the property value.
  */
-@Suppress("ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING", "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_SUPERTYPES_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING") // Can be dropped after bootstrap update
 public actual interface KProperty<out V> : KCallable<V> {
     /**
      * `true` if this property is `lateinit`.
      * See the [Kotlin language documentation](https://kotlinlang.org/docs/reference/properties.html#late-initialized-properties)
      * for more information.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.1")
     public val isLateinit: Boolean
 
@@ -31,12 +29,10 @@ public actual interface KProperty<out V> : KCallable<V> {
      * See the [Kotlin language documentation](https://kotlinlang.org/docs/reference/properties.html#compile-time-constants)
      * for more information.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.1")
     public val isConst: Boolean
 
     /** The getter of this property, used to obtain the value of the property. */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     public val getter: Getter<V>
 
     /**
@@ -60,10 +56,8 @@ public actual interface KProperty<out V> : KCallable<V> {
 /**
  * Represents a property declared as a `var`.
  */
-@Suppress("ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING", "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_SUPERTYPES_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING") // Can be dropped after bootstrap update
 public actual interface KMutableProperty<V> : KProperty<V> {
     /** The setter of this mutable property, used to change the value of the property. */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     public val setter: Setter<V>
 
     /**
@@ -78,7 +72,7 @@ public actual interface KMutableProperty<V> : KProperty<V> {
  * Such property is either originally declared in a receiverless context such as a package,
  * or has the receiver bound to it.
  */
-@Suppress("ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING", "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_SUPERTYPES_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING") // Can be dropped after bootstrap update
+@Suppress("ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING") // Covariant 'setter' override. The suppress can be dropped in K2 KT-61184
 public actual interface KProperty0<out V> : KProperty<V>, () -> V {
     /**
      * Returns the current value of the property.
@@ -90,7 +84,6 @@ public actual interface KProperty0<out V> : KProperty<V>, () -> V {
      * See the [Kotlin language documentation](https://kotlinlang.org/docs/reference/delegated-properties.html)
      * for more information.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.1")
     public fun getDelegate(): Any?
 
@@ -135,7 +128,7 @@ public actual interface KMutableProperty0<V> : KProperty0<V>, KMutableProperty<V
  * @param T the type of the receiver which should be used to obtain the value of the property.
  * @param V the type of the property value.
  */
-@Suppress("ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING", "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_SUPERTYPES_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING") // Can be dropped after bootstrap update
+@Suppress("ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING") // Covariant 'getter' override. The suppress can be dropped in K2 KT-61184
 public actual interface KProperty1<T, out V> : KProperty<V>, (T) -> V {
     /**
      * Returns the current value of the property.
@@ -160,7 +153,6 @@ public actual interface KProperty1<T, out V> : KProperty<V>, (T) -> V {
      *
      * @see [kotlin.reflect.full.getExtensionDelegate] // [KProperty1.getExtensionDelegate]
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.1")
     public fun getDelegate(receiver: T): Any?
 
@@ -212,7 +204,7 @@ public actual interface KMutableProperty1<T, V> : KProperty1<T, V>, KMutableProp
  *        the type of the extension receiver.
  * @param V the type of the property value.
  */
-@Suppress("ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING", "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_SUPERTYPES_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING") // Can be dropped after bootstrap update
+@Suppress("ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING") // Covariant 'getter' override. The suppress can be dropped in K2 KT-61184
 public actual interface KProperty2<D, E, out V> : KProperty<V>, (D, E) -> V {
     /**
      * Returns the current value of the property. In case of the extension property in a class,
@@ -236,7 +228,6 @@ public actual interface KProperty2<D, E, out V> : KProperty<V>, (D, E) -> V {
      *
      * @see [kotlin.reflect.full.getExtensionDelegate] // [KProperty2.getExtensionDelegate]
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     @SinceKotlin("1.1")
     public fun getDelegate(receiver1: D, receiver2: E): Any?
 
diff --git a/libraries/stdlib/jvm/src/kotlin/reflect/KType.kt b/libraries/stdlib/jvm/src/kotlin/reflect/KType.kt
index 8a5b2859347..742c89e5cf2 100644
--- a/libraries/stdlib/jvm/src/kotlin/reflect/KType.kt
+++ b/libraries/stdlib/jvm/src/kotlin/reflect/KType.kt
@@ -9,7 +9,6 @@ package kotlin.reflect
  * Represents a type. Type is usually either a class with optional type arguments,
  * or a type parameter of some declaration, plus nullability.
  */
-@Suppress("ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING", "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_SUPERTYPES_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING") // Can be dropped after bootstrap update
 public actual interface KType : KAnnotatedElement {
     /**
      * The declaration of the classifier used in this type.
diff --git a/libraries/stdlib/native-wasm/src/kotlin/collections/AbstractMutableCollection.kt b/libraries/stdlib/native-wasm/src/kotlin/collections/AbstractMutableCollection.kt
index 0bfc00c69d7..0bcba06c9ed 100644
--- a/libraries/stdlib/native-wasm/src/kotlin/collections/AbstractMutableCollection.kt
+++ b/libraries/stdlib/native-wasm/src/kotlin/collections/AbstractMutableCollection.kt
@@ -10,7 +10,6 @@ package kotlin.collections
  *
  * @param E the type of elements contained in the collection. The collection is invariant in its element type.
  */
-@Suppress("ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING", "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_SUPERTYPES_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING") // Can be dropped after bootstrap update
 public actual abstract class AbstractMutableCollection<E> protected actual constructor(): MutableCollection<E>, AbstractCollection<E>() {
 
     // Bulk Modification Operations
diff --git a/libraries/stdlib/native-wasm/src/kotlin/collections/AbstractMutableList.kt b/libraries/stdlib/native-wasm/src/kotlin/collections/AbstractMutableList.kt
index 6a7b5b6febb..61eb0d9889c 100644
--- a/libraries/stdlib/native-wasm/src/kotlin/collections/AbstractMutableList.kt
+++ b/libraries/stdlib/native-wasm/src/kotlin/collections/AbstractMutableList.kt
@@ -17,10 +17,6 @@ package kotlin.collections
  *
  * @param E the type of elements contained in the list. The list is invariant in its element type.
  */
-@Suppress(
-    "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING",
-    "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_SUPERTYPES_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING"
-) // Can be dropped after bootstrap update
 public actual abstract class AbstractMutableList<E> protected actual constructor() : AbstractMutableCollection<E>(), MutableList<E> {
     /**
      * The number of times this list is structurally modified.
@@ -32,7 +28,6 @@ public actual abstract class AbstractMutableList<E> protected actual constructor
      * to provide fail-fast behavoir when a concurrent modification is detected during iteration.
      * [ConcurrentModificationException] will be thrown in this case.
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     protected var modCount: Int = 0
 
     abstract override fun add(index: Int, element: E): Unit
@@ -86,7 +81,6 @@ public actual abstract class AbstractMutableList<E> protected actual constructor
     /**
      * Removes the range of elements from this list starting from [fromIndex] and ending with but not including [toIndex].
      */
-    @Suppress("NON_ACTUAL_MEMBER_DECLARED_IN_EXPECT_NON_FINAL_CLASSIFIER_ACTUALIZATION_WARNING") // Can be dropped after bootstrap update
     protected open fun removeRange(fromIndex: Int, toIndex: Int) {
         val iterator = listIterator(fromIndex)
         repeat(toIndex - fromIndex) {
diff --git a/libraries/stdlib/native-wasm/src/kotlin/collections/AbstractMutableMap.kt b/libraries/stdlib/native-wasm/src/kotlin/collections/AbstractMutableMap.kt
index f8d3d124feb..560223d93f3 100644
--- a/libraries/stdlib/native-wasm/src/kotlin/collections/AbstractMutableMap.kt
+++ b/libraries/stdlib/native-wasm/src/kotlin/collections/AbstractMutableMap.kt
@@ -8,7 +8,6 @@ package kotlin.collections
  * @param K the type of map keys. The map is invariant in its key type.
  * @param V the type of map values. The map is invariant in its value type.
  */
-@Suppress("ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING", "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_SUPERTYPES_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING") // Can be dropped after bootstrap update
 @SinceKotlin("1.1")
 public actual abstract class AbstractMutableMap<K, V> protected actual constructor() : AbstractMap<K, V>(), MutableMap<K, V> {
     /**
diff --git a/libraries/stdlib/native-wasm/src/kotlin/collections/AbstractMutableSet.kt b/libraries/stdlib/native-wasm/src/kotlin/collections/AbstractMutableSet.kt
index 8eb94d9d6e8..47da186ccb6 100644
--- a/libraries/stdlib/native-wasm/src/kotlin/collections/AbstractMutableSet.kt
+++ b/libraries/stdlib/native-wasm/src/kotlin/collections/AbstractMutableSet.kt
@@ -5,7 +5,6 @@ package kotlin.collections
  *
  * @param E the type of elements contained in the set. The set is invariant in its element type.
  */
-@Suppress("ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING", "ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_SUPERTYPES_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING") // Can be dropped after bootstrap update
 @SinceKotlin("1.1")
 public actual abstract class AbstractMutableSet<E> protected actual constructor() : AbstractMutableCollection<E>(), MutableSet<E> {
     /**