diff --git a/gradle.properties b/gradle.properties
index dca4c7278db..992e2980aad 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -17,7 +17,7 @@ kotlin.build.useIR=true
 #maven.repository.mirror=http://repository.jetbrains.com/remote-repos/
 #bootstrap.kotlin.repo=https://dl.bintray.com/kotlin/kotlin-dev
 #bootstrap.kotlin.version=1.1.50-dev-1451
-bootstrap.kotlin.default.version=1.5.0-dev-2205
+bootstrap.kotlin.default.version=1.5.20-dev-814
 
 kotlin.build.publishing.attempts=20
 #signingRequired=true
diff --git a/libraries/stdlib/api/js-v1/kotlin.kt b/libraries/stdlib/api/js-v1/kotlin.kt
index 8590a2ab5bc..b171cf91d52 100644
--- a/libraries/stdlib/api/js-v1/kotlin.kt
+++ b/libraries/stdlib/api/js-v1/kotlin.kt
@@ -1061,6 +1061,8 @@ public final class DeepRecursiveFunction<T, R> {
 @kotlin.SinceKotlin(version = "1.4")
 @kotlin.ExperimentalStdlibApi
 public sealed class DeepRecursiveScope<T, R> {
+    protected constructor DeepRecursiveScope<T, R>()
+
     public abstract suspend fun callRecursive(value: T): R
 
     public abstract suspend fun <U, S> kotlin.DeepRecursiveFunction<U, S>.callRecursive(value: U): S
@@ -2969,4 +2971,4 @@ public final annotation class UseExperimental : kotlin.Annotation {
     public constructor UseExperimental(vararg markerClass: kotlin.reflect.KClass<out kotlin.Annotation>)
 
     public final val markerClass: kotlin.Array<out kotlin.reflect.KClass<out kotlin.Annotation>> { get; }
-}
\ No newline at end of file
+}
diff --git a/libraries/stdlib/api/js/kotlin.kt b/libraries/stdlib/api/js/kotlin.kt
index bf897984b45..5651e59e50d 100644
--- a/libraries/stdlib/api/js/kotlin.kt
+++ b/libraries/stdlib/api/js/kotlin.kt
@@ -1032,6 +1032,8 @@ public final class DeepRecursiveFunction<T, R> {
 @kotlin.SinceKotlin(version = "1.4")
 @kotlin.ExperimentalStdlibApi
 public sealed class DeepRecursiveScope<T, R> {
+    protected constructor DeepRecursiveScope<T, R>()
+
     public abstract suspend fun callRecursive(value: T): R
 
     public abstract suspend fun <U, S> kotlin.DeepRecursiveFunction<U, S>.callRecursive(value: U): S
@@ -2970,4 +2972,4 @@ public final annotation class UseExperimental : kotlin.Annotation {
     public constructor UseExperimental(vararg markerClass: kotlin.reflect.KClass<out kotlin.Annotation>)
 
     public final val markerClass: kotlin.Array<out kotlin.reflect.KClass<out kotlin.Annotation>> { get; }
-}
\ No newline at end of file
+}