diff --git a/libraries/stdlib/src/kotlin/coroutines/experimental/SequenceBuilder.kt b/libraries/stdlib/coroutines/src/kotlin/sequences/SequenceBuilder.kt
similarity index 98%
rename from libraries/stdlib/src/kotlin/coroutines/experimental/SequenceBuilder.kt
rename to libraries/stdlib/coroutines/src/kotlin/sequences/SequenceBuilder.kt
index c7982fafa7c..6c57d99881d 100644
--- a/libraries/stdlib/src/kotlin/coroutines/experimental/SequenceBuilder.kt
+++ b/libraries/stdlib/coroutines/src/kotlin/sequences/SequenceBuilder.kt
@@ -6,9 +6,10 @@
 @file:kotlin.jvm.JvmMultifileClass
 @file:kotlin.jvm.JvmName("SequenceBuilderKt")
 
-package kotlin.coroutines.experimental
+package kotlin.sequences
 
 import kotlin.*
+import kotlin.coroutines.*
 import kotlin.coroutines.experimental.intrinsics.*
 
 /**
@@ -19,7 +20,7 @@ import kotlin.coroutines.experimental.intrinsics.*
  * @sample samples.collections.Sequences.Building.buildSequenceYieldAll
  * @sample samples.collections.Sequences.Building.buildFibonacciSequence
  */
-@SinceKotlin("1.1")
+@SinceKotlin("1.3")
 public fun <T> buildSequence(builderAction: suspend SequenceBuilder<T>.() -> Unit): Sequence<T> = Sequence { buildIterator(builderAction) }
 
 /**
@@ -28,7 +29,7 @@ public fun <T> buildSequence(builderAction: suspend SequenceBuilder<T>.() -> Uni
  * @sample samples.collections.Sequences.Building.buildIterator
  * @sample samples.collections.Iterables.Building.iterable
  */
-@SinceKotlin("1.1")
+@SinceKotlin("1.3")
 public fun <T> buildIterator(builderAction: suspend SequenceBuilder<T>.() -> Unit): Iterator<T> {
     val iterator = SequenceBuilderIterator<T>()
     iterator.nextStep = builderAction.createCoroutineUnchecked(receiver = iterator, completion = iterator)
@@ -45,7 +46,7 @@ public fun <T> buildIterator(builderAction: suspend SequenceBuilder<T>.() -> Uni
  * @sample samples.collections.Sequences.Building.buildFibonacciSequence
  */
 @RestrictsSuspension
-@SinceKotlin("1.1")
+@SinceKotlin("1.3")
 public abstract class SequenceBuilder<in T> internal constructor() {
     /**
      * Yields a value to the [Iterator] being built.