diff --git a/libraries/stdlib/samples/build.gradle b/libraries/stdlib/samples/build.gradle
index 05cbcdb63ca..cda84fef017 100644
--- a/libraries/stdlib/samples/build.gradle
+++ b/libraries/stdlib/samples/build.gradle
@@ -11,6 +11,7 @@ sourceSets {
 
 compileTestKotlin {
     kotlinOptions.jdkHome = JDK_18
+    kotlinOptions.freeCompilerArgs += ["-XXLanguage:+ReleaseCoroutines"]
 }
 
 kotlin.experimental.coroutines 'enable'
diff --git a/libraries/stdlib/samples/test/samples/collections/iterables.kt b/libraries/stdlib/samples/test/samples/collections/iterables.kt
index 2fad793115d..0861cff59dc 100644
--- a/libraries/stdlib/samples/test/samples/collections/iterables.kt
+++ b/libraries/stdlib/samples/test/samples/collections/iterables.kt
@@ -17,7 +17,6 @@
 package samples.collections
 
 import samples.*
-import kotlin.coroutines.experimental.buildIterator
 
 @RunWith(Enclosed::class)
 class Iterables {
diff --git a/libraries/stdlib/samples/test/samples/collections/sequences.kt b/libraries/stdlib/samples/test/samples/collections/sequences.kt
index ca6814bed85..76dbd38ba3b 100644
--- a/libraries/stdlib/samples/test/samples/collections/sequences.kt
+++ b/libraries/stdlib/samples/test/samples/collections/sequences.kt
@@ -2,8 +2,6 @@ package samples.collections
 
 import samples.*
 import kotlin.test.*
-import kotlin.coroutines.experimental.buildIterator
-import kotlin.coroutines.experimental.buildSequence
 
 @RunWith(Enclosed::class)
 class Sequences {