diff --git a/buildSrc/src/main/kotlin/source-sets-conventions.gradle.kts b/buildSrc/src/main/kotlin/source-sets-conventions.gradle.kts
index 6aca5431a..c6b3a0b15 100644
--- a/buildSrc/src/main/kotlin/source-sets-conventions.gradle.kts
+++ b/buildSrc/src/main/kotlin/source-sets-conventions.gradle.kts
@@ -69,7 +69,6 @@ kotlin {
             progressiveMode = true
 
             optIn("kotlin.ExperimentalMultiplatform")
-            optIn("kotlin.ExperimentalStdlibApi")
             optIn("kotlinx.serialization.InternalSerializationApi")
         }
     }
diff --git a/core/api/kotlinx-serialization-core.api b/core/api/kotlinx-serialization-core.api
index c99f769cd..0ac51c851 100644
--- a/core/api/kotlinx-serialization-core.api
+++ b/core/api/kotlinx-serialization-core.api
@@ -199,6 +199,7 @@ public final class kotlinx/serialization/builtins/BuiltinSerializersKt {
 	public static final fun serializer (Lkotlin/jvm/internal/ShortCompanionObject;)Lkotlinx/serialization/KSerializer;
 	public static final fun serializer (Lkotlin/jvm/internal/StringCompanionObject;)Lkotlinx/serialization/KSerializer;
 	public static final fun serializer (Lkotlin/time/Duration$Companion;)Lkotlinx/serialization/KSerializer;
+	public static final fun serializer (Lkotlin/uuid/Uuid$Companion;)Lkotlinx/serialization/KSerializer;
 }
 
 public final class kotlinx/serialization/builtins/LongAsStringSerializer : kotlinx/serialization/KSerializer {
@@ -1293,6 +1294,15 @@ public final class kotlinx/serialization/internal/UnitSerializer : kotlinx/seria
 	public fun serialize (Lkotlinx/serialization/encoding/Encoder;Lkotlin/Unit;)V
 }
 
+public final class kotlinx/serialization/internal/UuidSerializer : kotlinx/serialization/KSerializer {
+	public static final field INSTANCE Lkotlinx/serialization/internal/UuidSerializer;
+	public synthetic fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Ljava/lang/Object;
+	public fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Lkotlin/uuid/Uuid;
+	public fun getDescriptor ()Lkotlinx/serialization/descriptors/SerialDescriptor;
+	public synthetic fun serialize (Lkotlinx/serialization/encoding/Encoder;Ljava/lang/Object;)V
+	public fun serialize (Lkotlinx/serialization/encoding/Encoder;Lkotlin/uuid/Uuid;)V
+}
+
 public final class kotlinx/serialization/modules/PolymorphicModuleBuilder {
 	public fun <init> (Lkotlin/reflect/KClass;Lkotlinx/serialization/KSerializer;)V
 	public synthetic fun <init> (Lkotlin/reflect/KClass;Lkotlinx/serialization/KSerializer;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
diff --git a/core/api/kotlinx-serialization-core.klib.api b/core/api/kotlinx-serialization-core.klib.api
index 0520a19ab..fbb167383 100644
--- a/core/api/kotlinx-serialization-core.klib.api
+++ b/core/api/kotlinx-serialization-core.klib.api
@@ -534,6 +534,7 @@ final class kotlinx.serialization/UnknownFieldException : kotlinx.serialization/
     constructor <init>(kotlin/Int) // kotlinx.serialization/UnknownFieldException.<init>|<init>(kotlin.Int){}[0]
 }
 final fun (kotlin.time/Duration.Companion).kotlinx.serialization.builtins/serializer(): kotlinx.serialization/KSerializer<kotlin.time/Duration> // kotlinx.serialization.builtins/serializer|serializer@kotlin.time.Duration.Companion(){}[0]
+final fun (kotlin.uuid/Uuid.Companion).kotlinx.serialization.builtins/serializer(): kotlinx.serialization/KSerializer<kotlin.uuid/Uuid> // kotlinx.serialization.builtins/serializer|serializer@kotlin.uuid.Uuid.Companion(){}[0]
 final fun (kotlin/Boolean.Companion).kotlinx.serialization.builtins/serializer(): kotlinx.serialization/KSerializer<kotlin/Boolean> // kotlinx.serialization.builtins/serializer|serializer@kotlin.Boolean.Companion(){}[0]
 final fun (kotlin/Byte.Companion).kotlinx.serialization.builtins/serializer(): kotlinx.serialization/KSerializer<kotlin/Byte> // kotlinx.serialization.builtins/serializer|serializer@kotlin.Byte.Companion(){}[0]
 final fun (kotlin/Char.Companion).kotlinx.serialization.builtins/serializer(): kotlinx.serialization/KSerializer<kotlin/Char> // kotlinx.serialization.builtins/serializer|serializer@kotlin.Char.Companion(){}[0]
@@ -747,6 +748,12 @@ final object kotlinx.serialization.internal/UnitSerializer : kotlinx.serializati
     final val descriptor // kotlinx.serialization.internal/UnitSerializer.descriptor|{}descriptor[0]
         final fun <get-descriptor>(): kotlinx.serialization.descriptors/SerialDescriptor // kotlinx.serialization.internal/UnitSerializer.descriptor.<get-descriptor>|<get-descriptor>(){}[0]
 }
+final object kotlinx.serialization.internal/UuidSerializer : kotlinx.serialization/KSerializer<kotlin.uuid/Uuid> { // kotlinx.serialization.internal/UuidSerializer|null[0]
+    final fun deserialize(kotlinx.serialization.encoding/Decoder): kotlin.uuid/Uuid // kotlinx.serialization.internal/UuidSerializer.deserialize|deserialize(kotlinx.serialization.encoding.Decoder){}[0]
+    final fun serialize(kotlinx.serialization.encoding/Encoder, kotlin.uuid/Uuid) // kotlinx.serialization.internal/UuidSerializer.serialize|serialize(kotlinx.serialization.encoding.Encoder;kotlin.uuid.Uuid){}[0]
+    final val descriptor // kotlinx.serialization.internal/UuidSerializer.descriptor|{}descriptor[0]
+        final fun <get-descriptor>(): kotlinx.serialization.descriptors/SerialDescriptor // kotlinx.serialization.internal/UuidSerializer.descriptor.<get-descriptor>|<get-descriptor>(){}[0]
+}
 final val kotlinx.serialization.builtins/nullable // kotlinx.serialization.builtins/nullable|@kotlinx.serialization.KSerializer<0:0>{0§<kotlin.Any>}nullable[0]
     final fun <#A1: kotlin/Any> (kotlinx.serialization/KSerializer<#A1>).<get-nullable>(): kotlinx.serialization/KSerializer<#A1?> // kotlinx.serialization.builtins/nullable.<get-nullable>|<get-nullable>@kotlinx.serialization.KSerializer<0:0>(){0§<kotlin.Any>}[0]
 final val kotlinx.serialization.descriptors/capturedKClass // kotlinx.serialization.descriptors/capturedKClass|@kotlinx.serialization.descriptors.SerialDescriptor{}capturedKClass[0]
@@ -871,7 +878,6 @@ sealed class <#A: kotlin/Any?, #B: kotlin/Any?, #C: kotlin/Any?, #D: kotlin.coll
     abstract fun (#D).insertKeyValuePair(kotlin/Int, #A, #B) // kotlinx.serialization.internal/MapLikeSerializer.insertKeyValuePair|insertKeyValuePair@1:3(kotlin.Int;1:0;1:1){}[0]
     abstract val descriptor // kotlinx.serialization.internal/MapLikeSerializer.descriptor|{}descriptor[0]
         abstract fun <get-descriptor>(): kotlinx.serialization.descriptors/SerialDescriptor // kotlinx.serialization.internal/MapLikeSerializer.descriptor.<get-descriptor>|<get-descriptor>(){}[0]
-    constructor <init>(kotlinx.serialization/KSerializer<#A>, kotlinx.serialization/KSerializer<#B>) // kotlinx.serialization.internal/MapLikeSerializer.<init>|<init>(kotlinx.serialization.KSerializer<1:0>;kotlinx.serialization.KSerializer<1:1>){}[0]
     final fun readAll(kotlinx.serialization.encoding/CompositeDecoder, #D, kotlin/Int, kotlin/Int) // kotlinx.serialization.internal/MapLikeSerializer.readAll|readAll(kotlinx.serialization.encoding.CompositeDecoder;1:3;kotlin.Int;kotlin.Int){}[0]
     final fun readElement(kotlinx.serialization.encoding/CompositeDecoder, kotlin/Int, #D, kotlin/Boolean) // kotlinx.serialization.internal/MapLikeSerializer.readElement|readElement(kotlinx.serialization.encoding.CompositeDecoder;kotlin.Int;1:3;kotlin.Boolean){}[0]
     final val keySerializer // kotlinx.serialization.internal/MapLikeSerializer.keySerializer|{}keySerializer[0]
@@ -891,7 +897,6 @@ sealed class <#A: kotlin/Any?, #B: kotlin/Any?, #C: kotlin/Any?> kotlinx.seriali
     abstract fun readAll(kotlinx.serialization.encoding/CompositeDecoder, #C, kotlin/Int, kotlin/Int) // kotlinx.serialization.internal/AbstractCollectionSerializer.readAll|readAll(kotlinx.serialization.encoding.CompositeDecoder;1:2;kotlin.Int;kotlin.Int){}[0]
     abstract fun readElement(kotlinx.serialization.encoding/CompositeDecoder, kotlin/Int, #C, kotlin/Boolean = ...) // kotlinx.serialization.internal/AbstractCollectionSerializer.readElement|readElement(kotlinx.serialization.encoding.CompositeDecoder;kotlin.Int;1:2;kotlin.Boolean){}[0]
     abstract fun serialize(kotlinx.serialization.encoding/Encoder, #B) // kotlinx.serialization.internal/AbstractCollectionSerializer.serialize|serialize(kotlinx.serialization.encoding.Encoder;1:1){}[0]
-    constructor <init>() // kotlinx.serialization.internal/AbstractCollectionSerializer.<init>|<init>(){}[0]
     final fun merge(kotlinx.serialization.encoding/Decoder, #B?): #B // kotlinx.serialization.internal/AbstractCollectionSerializer.merge|merge(kotlinx.serialization.encoding.Decoder;1:1?){}[0]
     open fun deserialize(kotlinx.serialization.encoding/Decoder): #B // kotlinx.serialization.internal/AbstractCollectionSerializer.deserialize|deserialize(kotlinx.serialization.encoding.Decoder){}[0]
 }
@@ -899,7 +904,6 @@ sealed class <#A: kotlin/Any?, #B: kotlin/Any?, #C: kotlin/Any?> kotlinx.seriali
     abstract fun (#C).insert(kotlin/Int, #A) // kotlinx.serialization.internal/CollectionLikeSerializer.insert|insert@1:2(kotlin.Int;1:0){}[0]
     abstract val descriptor // kotlinx.serialization.internal/CollectionLikeSerializer.descriptor|{}descriptor[0]
         abstract fun <get-descriptor>(): kotlinx.serialization.descriptors/SerialDescriptor // kotlinx.serialization.internal/CollectionLikeSerializer.descriptor.<get-descriptor>|<get-descriptor>(){}[0]
-    constructor <init>(kotlinx.serialization/KSerializer<#A>) // kotlinx.serialization.internal/CollectionLikeSerializer.<init>|<init>(kotlinx.serialization.KSerializer<1:0>){}[0]
     final fun readAll(kotlinx.serialization.encoding/CompositeDecoder, #C, kotlin/Int, kotlin/Int) // kotlinx.serialization.internal/CollectionLikeSerializer.readAll|readAll(kotlinx.serialization.encoding.CompositeDecoder;1:2;kotlin.Int;kotlin.Int){}[0]
     open fun readElement(kotlinx.serialization.encoding/CompositeDecoder, kotlin/Int, #C, kotlin/Boolean) // kotlinx.serialization.internal/CollectionLikeSerializer.readElement|readElement(kotlinx.serialization.encoding.CompositeDecoder;kotlin.Int;1:2;kotlin.Boolean){}[0]
     open fun serialize(kotlinx.serialization.encoding/Encoder, #B) // kotlinx.serialization.internal/CollectionLikeSerializer.serialize|serialize(kotlinx.serialization.encoding.Encoder;1:1){}[0]
@@ -910,7 +914,6 @@ sealed class <#A: kotlin/Any?, #B: kotlin/Any?, #C: kotlin/Any?> kotlinx.seriali
         abstract fun (#C).<get-key>(): #A // kotlinx.serialization.internal/KeyValueSerializer.key.<get-key>|<get-key>@1:2(){}[0]
     abstract val value // kotlinx.serialization.internal/KeyValueSerializer.value|@1:2{}value[0]
         abstract fun (#C).<get-value>(): #B // kotlinx.serialization.internal/KeyValueSerializer.value.<get-value>|<get-value>@1:2(){}[0]
-    constructor <init>(kotlinx.serialization/KSerializer<#A>, kotlinx.serialization/KSerializer<#B>) // kotlinx.serialization.internal/KeyValueSerializer.<init>|<init>(kotlinx.serialization.KSerializer<1:0>;kotlinx.serialization.KSerializer<1:1>){}[0]
     final val keySerializer // kotlinx.serialization.internal/KeyValueSerializer.keySerializer|{}keySerializer[0]
         final fun <get-keySerializer>(): kotlinx.serialization/KSerializer<#A> // kotlinx.serialization.internal/KeyValueSerializer.keySerializer.<get-keySerializer>|<get-keySerializer>(){}[0]
     final val valueSerializer // kotlinx.serialization.internal/KeyValueSerializer.valueSerializer|{}valueSerializer[0]
@@ -919,12 +922,10 @@ sealed class <#A: kotlin/Any?, #B: kotlin/Any?, #C: kotlin/Any?> kotlinx.seriali
     open fun serialize(kotlinx.serialization.encoding/Encoder, #C) // kotlinx.serialization.internal/KeyValueSerializer.serialize|serialize(kotlinx.serialization.encoding.Encoder;1:2){}[0]
 }
 sealed class kotlinx.serialization.descriptors/PolymorphicKind : kotlinx.serialization.descriptors/SerialKind { // kotlinx.serialization.descriptors/PolymorphicKind|null[0]
-    constructor <init>() // kotlinx.serialization.descriptors/PolymorphicKind.<init>|<init>(){}[0]
     final object OPEN : kotlinx.serialization.descriptors/PolymorphicKind // kotlinx.serialization.descriptors/PolymorphicKind.OPEN|null[0]
     final object SEALED : kotlinx.serialization.descriptors/PolymorphicKind // kotlinx.serialization.descriptors/PolymorphicKind.SEALED|null[0]
 }
 sealed class kotlinx.serialization.descriptors/PrimitiveKind : kotlinx.serialization.descriptors/SerialKind { // kotlinx.serialization.descriptors/PrimitiveKind|null[0]
-    constructor <init>() // kotlinx.serialization.descriptors/PrimitiveKind.<init>|<init>(){}[0]
     final object BOOLEAN : kotlinx.serialization.descriptors/PrimitiveKind // kotlinx.serialization.descriptors/PrimitiveKind.BOOLEAN|null[0]
     final object BYTE : kotlinx.serialization.descriptors/PrimitiveKind // kotlinx.serialization.descriptors/PrimitiveKind.BYTE|null[0]
     final object CHAR : kotlinx.serialization.descriptors/PrimitiveKind // kotlinx.serialization.descriptors/PrimitiveKind.CHAR|null[0]
@@ -936,14 +937,12 @@ sealed class kotlinx.serialization.descriptors/PrimitiveKind : kotlinx.serializa
     final object STRING : kotlinx.serialization.descriptors/PrimitiveKind // kotlinx.serialization.descriptors/PrimitiveKind.STRING|null[0]
 }
 sealed class kotlinx.serialization.descriptors/SerialKind { // kotlinx.serialization.descriptors/SerialKind|null[0]
-    constructor <init>() // kotlinx.serialization.descriptors/SerialKind.<init>|<init>(){}[0]
     final object CONTEXTUAL : kotlinx.serialization.descriptors/SerialKind // kotlinx.serialization.descriptors/SerialKind.CONTEXTUAL|null[0]
     final object ENUM : kotlinx.serialization.descriptors/SerialKind // kotlinx.serialization.descriptors/SerialKind.ENUM|null[0]
     open fun hashCode(): kotlin/Int // kotlinx.serialization.descriptors/SerialKind.hashCode|hashCode(){}[0]
     open fun toString(): kotlin/String // kotlinx.serialization.descriptors/SerialKind.toString|toString(){}[0]
 }
 sealed class kotlinx.serialization.descriptors/StructureKind : kotlinx.serialization.descriptors/SerialKind { // kotlinx.serialization.descriptors/StructureKind|null[0]
-    constructor <init>() // kotlinx.serialization.descriptors/StructureKind.<init>|<init>(){}[0]
     final object CLASS : kotlinx.serialization.descriptors/StructureKind // kotlinx.serialization.descriptors/StructureKind.CLASS|null[0]
     final object LIST : kotlinx.serialization.descriptors/StructureKind // kotlinx.serialization.descriptors/StructureKind.LIST|null[0]
     final object MAP : kotlinx.serialization.descriptors/StructureKind // kotlinx.serialization.descriptors/StructureKind.MAP|null[0]
@@ -954,7 +953,6 @@ sealed class kotlinx.serialization.modules/SerializersModule { // kotlinx.serial
     abstract fun <#A1: kotlin/Any> getPolymorphic(kotlin.reflect/KClass<in #A1>, #A1): kotlinx.serialization/SerializationStrategy<#A1>? // kotlinx.serialization.modules/SerializersModule.getPolymorphic|getPolymorphic(kotlin.reflect.KClass<in|0:0>;0:0){0§<kotlin.Any>}[0]
     abstract fun <#A1: kotlin/Any> getPolymorphic(kotlin.reflect/KClass<in #A1>, kotlin/String?): kotlinx.serialization/DeserializationStrategy<#A1>? // kotlinx.serialization.modules/SerializersModule.getPolymorphic|getPolymorphic(kotlin.reflect.KClass<in|0:0>;kotlin.String?){0§<kotlin.Any>}[0]
     abstract fun dumpTo(kotlinx.serialization.modules/SerializersModuleCollector) // kotlinx.serialization.modules/SerializersModule.dumpTo|dumpTo(kotlinx.serialization.modules.SerializersModuleCollector){}[0]
-    constructor <init>() // kotlinx.serialization.modules/SerializersModule.<init>|<init>(){}[0]
     final fun <#A1: kotlin/Any> getContextual(kotlin.reflect/KClass<#A1>): kotlinx.serialization/KSerializer<#A1>? // kotlinx.serialization.modules/SerializersModule.getContextual|getContextual(kotlin.reflect.KClass<0:0>){0§<kotlin.Any>}[0]
 }
 // Targets: [native, wasmJs, wasmWasi]
diff --git a/core/commonMain/src/kotlinx/serialization/builtins/BuiltinSerializers.kt b/core/commonMain/src/kotlinx/serialization/builtins/BuiltinSerializers.kt
index 4bd81012d..a593b49ef 100644
--- a/core/commonMain/src/kotlinx/serialization/builtins/BuiltinSerializers.kt
+++ b/core/commonMain/src/kotlinx/serialization/builtins/BuiltinSerializers.kt
@@ -10,6 +10,7 @@ import kotlinx.serialization.internal.*
 import kotlin.reflect.*
 import kotlinx.serialization.descriptors.*
 import kotlin.time.Duration
+import kotlin.uuid.*
 
 /**
  * Returns a nullable serializer for the given serializer of non-null type.
@@ -251,6 +252,20 @@ public fun UShort.Companion.serializer(): KSerializer<UShort> = UShortSerializer
  */
 public fun Duration.Companion.serializer(): KSerializer<Duration> = DurationSerializer
 
+/**
+ * Returns serializer for [Uuid].
+ * Serializer operates with a standard UUID string representation, also known as "hex-and-dash" format —
+ * [RFC 9562 section 4](https://www.rfc-editor.org/rfc/rfc9562.html#section-4).
+ *
+ * Deserialization is case-insensitive.
+ * More details can be found in the documentation of [Uuid.toString] and [Uuid.parse] functions.
+ *
+ * @see Uuid.toString
+ * @see Uuid.parse
+ */
+@ExperimentalStdlibApi
+public fun Uuid.Companion.serializer(): KSerializer<Uuid> = UuidSerializer
+
 /**
  * Returns serializer for [Nothing].
  * Throws an exception when trying to encode or decode.
diff --git a/core/commonMain/src/kotlinx/serialization/internal/BuiltInSerializers.kt b/core/commonMain/src/kotlinx/serialization/internal/BuiltInSerializers.kt
index 2e64a770f..74798f0f3 100644
--- a/core/commonMain/src/kotlinx/serialization/internal/BuiltInSerializers.kt
+++ b/core/commonMain/src/kotlinx/serialization/internal/BuiltInSerializers.kt
@@ -10,6 +10,7 @@ import kotlinx.serialization.descriptors.SerialDescriptor
 import kotlinx.serialization.encoding.Decoder
 import kotlinx.serialization.encoding.Encoder
 import kotlin.time.Duration
+import kotlin.uuid.*
 
 
 @PublishedApi
@@ -37,3 +38,17 @@ internal object NothingSerializer : KSerializer<Nothing> {
         throw SerializationException("'kotlin.Nothing' does not have instances")
     }
 }
+
+@PublishedApi
+@ExperimentalStdlibApi
+internal object UuidSerializer: KSerializer<Uuid> {
+    override val descriptor: SerialDescriptor = PrimitiveSerialDescriptor("kotlin.uuid.Uuid", PrimitiveKind.STRING)
+
+    override fun serialize(encoder: Encoder, value: Uuid) {
+        encoder.encodeString(value.toString())
+    }
+
+    override fun deserialize(decoder: Decoder): Uuid {
+        return Uuid.parse(decoder.decodeString())
+    }
+}
diff --git a/core/commonMain/src/kotlinx/serialization/internal/Primitives.kt b/core/commonMain/src/kotlinx/serialization/internal/Primitives.kt
index 2d9c52852..b0885a55d 100644
--- a/core/commonMain/src/kotlinx/serialization/internal/Primitives.kt
+++ b/core/commonMain/src/kotlinx/serialization/internal/Primitives.kt
@@ -11,11 +11,11 @@ import kotlinx.serialization.*
 import kotlinx.serialization.builtins.*
 import kotlinx.serialization.descriptors.*
 import kotlinx.serialization.encoding.*
-import kotlin.native.concurrent.*
 import kotlin.reflect.*
 import kotlin.time.Duration
+import kotlin.uuid.Uuid
 
-@OptIn(ExperimentalUnsignedTypes::class)
+@OptIn(ExperimentalUnsignedTypes::class, ExperimentalStdlibApi::class)
 private val BUILTIN_SERIALIZERS = mapOf(
     String::class to String.serializer(),
     Char::class to Char.serializer(),
@@ -44,7 +44,8 @@ private val BUILTIN_SERIALIZERS = mapOf(
     BooleanArray::class to BooleanArraySerializer(),
     Unit::class to Unit.serializer(),
     Nothing::class to NothingSerializer(),
-    Duration::class to Duration.serializer()
+    Duration::class to Duration.serializer(),
+    Uuid::class to Uuid.serializer()
 )
 
 internal class PrimitiveSerialDescriptor(
diff --git a/formats/cbor/api/kotlinx-serialization-cbor.klib.api b/formats/cbor/api/kotlinx-serialization-cbor.klib.api
index 0064161ac..daa407aab 100644
--- a/formats/cbor/api/kotlinx-serialization-cbor.klib.api
+++ b/formats/cbor/api/kotlinx-serialization-cbor.klib.api
@@ -22,7 +22,6 @@ open annotation class kotlinx.serialization.cbor/ByteString : kotlin/Annotation
     constructor <init>() // kotlinx.serialization.cbor/ByteString.<init>|<init>(){}[0]
 }
 sealed class kotlinx.serialization.cbor/Cbor : kotlinx.serialization/BinaryFormat { // kotlinx.serialization.cbor/Cbor|null[0]
-    constructor <init>(kotlin/Boolean, kotlin/Boolean, kotlinx.serialization.modules/SerializersModule) // kotlinx.serialization.cbor/Cbor.<init>|<init>(kotlin.Boolean;kotlin.Boolean;kotlinx.serialization.modules.SerializersModule){}[0]
     final object Default : kotlinx.serialization.cbor/Cbor // kotlinx.serialization.cbor/Cbor.Default|null[0]
     open fun <#A1: kotlin/Any?> decodeFromByteArray(kotlinx.serialization/DeserializationStrategy<#A1>, kotlin/ByteArray): #A1 // kotlinx.serialization.cbor/Cbor.decodeFromByteArray|decodeFromByteArray(kotlinx.serialization.DeserializationStrategy<0:0>;kotlin.ByteArray){0§<kotlin.Any?>}[0]
     open fun <#A1: kotlin/Any?> encodeToByteArray(kotlinx.serialization/SerializationStrategy<#A1>, #A1): kotlin/ByteArray // kotlinx.serialization.cbor/Cbor.encodeToByteArray|encodeToByteArray(kotlinx.serialization.SerializationStrategy<0:0>;0:0){0§<kotlin.Any?>}[0]
diff --git a/formats/json-tests/build.gradle.kts b/formats/json-tests/build.gradle.kts
index 53a57f003..4166f0c98 100644
--- a/formats/json-tests/build.gradle.kts
+++ b/formats/json-tests/build.gradle.kts
@@ -26,6 +26,7 @@ kotlin {
     sourceSets {
         configureEach {
             languageSettings {
+                optIn("kotlin.ExperimentalStdlibApi")
                 optIn("kotlinx.serialization.internal.CoreFriendModuleApi")
                 optIn("kotlinx.serialization.json.internal.JsonFriendModuleApi")
             }
diff --git a/formats/json-tests/commonTest/src/kotlinx/serialization/SerializersLookupTest.kt b/formats/json-tests/commonTest/src/kotlinx/serialization/SerializersLookupTest.kt
index 4b4aebfd2..6aebee901 100644
--- a/formats/json-tests/commonTest/src/kotlinx/serialization/SerializersLookupTest.kt
+++ b/formats/json-tests/commonTest/src/kotlinx/serialization/SerializersLookupTest.kt
@@ -15,6 +15,7 @@ import kotlinx.serialization.test.*
 import kotlin.reflect.*
 import kotlin.test.*
 import kotlin.time.Duration
+import kotlin.uuid.*
 
 @Suppress("RemoveExplicitTypeArguments") // This is exactly what's being tested
 class SerializersLookupTest : JsonTestBase() {
@@ -141,6 +142,13 @@ class SerializersLookupTest : JsonTestBase() {
         assertSame(Duration.serializer(), serializer<Duration>())
     }
 
+    @Test
+    fun testLookupUuid() {
+        assertSame<KSerializer<*>?>(Uuid.serializer(), serializerOrNull(typeOf<Uuid>()))
+        // TODO: uncomment in 2.1 release
+//        assertSame<KSerializer<*>?>(Uuid.serializer(), serializer<Uuid>())
+    }
+
     @Test
     fun testCustomGeneric() {
         val intBox = Box(42)
diff --git a/formats/json-tests/commonTest/src/kotlinx/serialization/features/UuidTest.kt b/formats/json-tests/commonTest/src/kotlinx/serialization/features/UuidTest.kt
new file mode 100644
index 000000000..52f3b13d9
--- /dev/null
+++ b/formats/json-tests/commonTest/src/kotlinx/serialization/features/UuidTest.kt
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2017-2024 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
+ */
+
+package kotlinx.serialization.features
+
+import kotlinx.serialization.*
+import kotlinx.serialization.builtins.*
+import kotlinx.serialization.json.*
+import kotlinx.serialization.modules.*
+import kotlin.test.*
+import kotlin.uuid.*
+
+class UuidTest : JsonTestBase() {
+    @Test
+    fun testPlainUuid() {
+        val uuid = Uuid.random()
+        assertJsonFormAndRestored(Uuid.serializer(), uuid, "\"$uuid\"")
+    }
+
+    // TODO: write a test without @Contextual after 2.1.0 release
+    @Serializable
+    data class Holder(@Contextual val uuid: Uuid)
+
+    val json = Json { serializersModule = serializersModuleOf(Uuid.serializer()) }
+
+    @Test
+    fun testNested() {
+        val fixed = Uuid.parse("bc501c76-d806-4578-b45e-97a264e280f1")
+        assertJsonFormAndRestored(
+            Holder.serializer(),
+            Holder(fixed),
+            """{"uuid":"bc501c76-d806-4578-b45e-97a264e280f1"}""",
+            json
+        )
+    }
+}
diff --git a/formats/json/api/kotlinx-serialization-json.klib.api b/formats/json/api/kotlinx-serialization-json.klib.api
index 6026f81f6..6993e759d 100644
--- a/formats/json/api/kotlinx-serialization-json.klib.api
+++ b/formats/json/api/kotlinx-serialization-json.klib.api
@@ -357,7 +357,6 @@ open annotation class kotlinx.serialization.json/JsonNames : kotlin/Annotation {
         final fun <get-names>(): kotlin/Array<out kotlin/String> // kotlinx.serialization.json/JsonNames.names.<get-names>|<get-names>(){}[0]
 }
 sealed class kotlinx.serialization.json/Json : kotlinx.serialization/StringFormat { // kotlinx.serialization.json/Json|null[0]
-    constructor <init>(kotlinx.serialization.json/JsonConfiguration, kotlinx.serialization.modules/SerializersModule) // kotlinx.serialization.json/Json.<init>|<init>(kotlinx.serialization.json.JsonConfiguration;kotlinx.serialization.modules.SerializersModule){}[0]
     final fun <#A1: kotlin/Any?> decodeFromJsonElement(kotlinx.serialization/DeserializationStrategy<#A1>, kotlinx.serialization.json/JsonElement): #A1 // kotlinx.serialization.json/Json.decodeFromJsonElement|decodeFromJsonElement(kotlinx.serialization.DeserializationStrategy<0:0>;kotlinx.serialization.json.JsonElement){0§<kotlin.Any?>}[0]
     final fun <#A1: kotlin/Any?> decodeFromString(kotlinx.serialization/DeserializationStrategy<#A1>, kotlin/String): #A1 // kotlinx.serialization.json/Json.decodeFromString|decodeFromString(kotlinx.serialization.DeserializationStrategy<0:0>;kotlin.String){0§<kotlin.Any?>}[0]
     final fun <#A1: kotlin/Any?> encodeToJsonElement(kotlinx.serialization/SerializationStrategy<#A1>, #A1): kotlinx.serialization.json/JsonElement // kotlinx.serialization.json/Json.encodeToJsonElement|encodeToJsonElement(kotlinx.serialization.SerializationStrategy<0:0>;0:0){0§<kotlin.Any?>}[0]
@@ -371,7 +370,6 @@ sealed class kotlinx.serialization.json/Json : kotlinx.serialization/StringForma
         open fun <get-serializersModule>(): kotlinx.serialization.modules/SerializersModule // kotlinx.serialization.json/Json.serializersModule.<get-serializersModule>|<get-serializersModule>(){}[0]
 }
 sealed class kotlinx.serialization.json/JsonElement { // kotlinx.serialization.json/JsonElement|null[0]
-    constructor <init>() // kotlinx.serialization.json/JsonElement.<init>|<init>(){}[0]
     final object Companion { // kotlinx.serialization.json/JsonElement.Companion|null[0]
         final fun serializer(): kotlinx.serialization/KSerializer<kotlinx.serialization.json/JsonElement> // kotlinx.serialization.json/JsonElement.Companion.serializer|serializer(){}[0]
     }
@@ -381,7 +379,6 @@ sealed class kotlinx.serialization.json/JsonPrimitive : kotlinx.serialization.js
         abstract fun <get-content>(): kotlin/String // kotlinx.serialization.json/JsonPrimitive.content.<get-content>|<get-content>(){}[0]
     abstract val isString // kotlinx.serialization.json/JsonPrimitive.isString|{}isString[0]
         abstract fun <get-isString>(): kotlin/Boolean // kotlinx.serialization.json/JsonPrimitive.isString.<get-isString>|<get-isString>(){}[0]
-    constructor <init>() // kotlinx.serialization.json/JsonPrimitive.<init>|<init>(){}[0]
     final object Companion { // kotlinx.serialization.json/JsonPrimitive.Companion|null[0]
         final fun serializer(): kotlinx.serialization/KSerializer<kotlinx.serialization.json/JsonPrimitive> // kotlinx.serialization.json/JsonPrimitive.Companion.serializer|serializer(){}[0]
     }
diff --git a/formats/properties/api/kotlinx-serialization-properties.klib.api b/formats/properties/api/kotlinx-serialization-properties.klib.api
index e60362384..39f83f96c 100644
--- a/formats/properties/api/kotlinx-serialization-properties.klib.api
+++ b/formats/properties/api/kotlinx-serialization-properties.klib.api
@@ -12,7 +12,6 @@ final inline fun <#A: reified kotlin/Any?> (kotlinx.serialization.properties/Pro
 final inline fun <#A: reified kotlin/Any?> (kotlinx.serialization.properties/Properties).kotlinx.serialization.properties/encodeToMap(#A): kotlin.collections/Map<kotlin/String, kotlin/Any> // kotlinx.serialization.properties/encodeToMap|encodeToMap@kotlinx.serialization.properties.Properties(0:0){0§<kotlin.Any?>}[0]
 final inline fun <#A: reified kotlin/Any?> (kotlinx.serialization.properties/Properties).kotlinx.serialization.properties/encodeToStringMap(#A): kotlin.collections/Map<kotlin/String, kotlin/String> // kotlinx.serialization.properties/encodeToStringMap|encodeToStringMap@kotlinx.serialization.properties.Properties(0:0){0§<kotlin.Any?>}[0]
 sealed class kotlinx.serialization.properties/Properties : kotlinx.serialization/SerialFormat { // kotlinx.serialization.properties/Properties|null[0]
-    constructor <init>(kotlinx.serialization.modules/SerializersModule, kotlin/Nothing?) // kotlinx.serialization.properties/Properties.<init>|<init>(kotlinx.serialization.modules.SerializersModule;kotlin.Nothing?){}[0]
     final fun <#A1: kotlin/Any?> decodeFromMap(kotlinx.serialization/DeserializationStrategy<#A1>, kotlin.collections/Map<kotlin/String, kotlin/Any>): #A1 // kotlinx.serialization.properties/Properties.decodeFromMap|decodeFromMap(kotlinx.serialization.DeserializationStrategy<0:0>;kotlin.collections.Map<kotlin.String,kotlin.Any>){0§<kotlin.Any?>}[0]
     final fun <#A1: kotlin/Any?> decodeFromStringMap(kotlinx.serialization/DeserializationStrategy<#A1>, kotlin.collections/Map<kotlin/String, kotlin/String>): #A1 // kotlinx.serialization.properties/Properties.decodeFromStringMap|decodeFromStringMap(kotlinx.serialization.DeserializationStrategy<0:0>;kotlin.collections.Map<kotlin.String,kotlin.String>){0§<kotlin.Any?>}[0]
     final fun <#A1: kotlin/Any?> encodeToMap(kotlinx.serialization/SerializationStrategy<#A1>, #A1): kotlin.collections/Map<kotlin/String, kotlin/Any> // kotlinx.serialization.properties/Properties.encodeToMap|encodeToMap(kotlinx.serialization.SerializationStrategy<0:0>;0:0){0§<kotlin.Any?>}[0]
diff --git a/formats/protobuf/api/kotlinx-serialization-protobuf.klib.api b/formats/protobuf/api/kotlinx-serialization-protobuf.klib.api
index c5cf553bc..df717cbf9 100644
--- a/formats/protobuf/api/kotlinx-serialization-protobuf.klib.api
+++ b/formats/protobuf/api/kotlinx-serialization-protobuf.klib.api
@@ -45,7 +45,6 @@ open annotation class kotlinx.serialization.protobuf/ProtoType : kotlin/Annotati
         final fun <get-type>(): kotlinx.serialization.protobuf/ProtoIntegerType // kotlinx.serialization.protobuf/ProtoType.type.<get-type>|<get-type>(){}[0]
 }
 sealed class kotlinx.serialization.protobuf/ProtoBuf : kotlinx.serialization/BinaryFormat { // kotlinx.serialization.protobuf/ProtoBuf|null[0]
-    constructor <init>(kotlin/Boolean, kotlinx.serialization.modules/SerializersModule) // kotlinx.serialization.protobuf/ProtoBuf.<init>|<init>(kotlin.Boolean;kotlinx.serialization.modules.SerializersModule){}[0]
     final object Default : kotlinx.serialization.protobuf/ProtoBuf // kotlinx.serialization.protobuf/ProtoBuf.Default|null[0]
     open fun <#A1: kotlin/Any?> decodeFromByteArray(kotlinx.serialization/DeserializationStrategy<#A1>, kotlin/ByteArray): #A1 // kotlinx.serialization.protobuf/ProtoBuf.decodeFromByteArray|decodeFromByteArray(kotlinx.serialization.DeserializationStrategy<0:0>;kotlin.ByteArray){0§<kotlin.Any?>}[0]
     open fun <#A1: kotlin/Any?> encodeToByteArray(kotlinx.serialization/SerializationStrategy<#A1>, #A1): kotlin/ByteArray // kotlinx.serialization.protobuf/ProtoBuf.encodeToByteArray|encodeToByteArray(kotlinx.serialization.SerializationStrategy<0:0>;0:0){0§<kotlin.Any?>}[0]
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index c82a83d6b..013228038 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,5 +1,5 @@
 [versions]
-kotlin = "2.0.0"
+kotlin = "2.0.20-Beta2"
 kover = "0.8.2"
 dokka = "1.9.20"
 knit = "0.5.0"
diff --git a/integration-test/gradle.properties b/integration-test/gradle.properties
index 6917df662..317291a31 100644
--- a/integration-test/gradle.properties
+++ b/integration-test/gradle.properties
@@ -2,7 +2,7 @@
 # Copyright 2017-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
 #
 
-mainKotlinVersion=2.0.0
+mainKotlinVersion=2.0.20-Beta2
 mainLibVersion=1.7.2-SNAPSHOT
 
 kotlin.code.style=official