diff --git a/compiler/testData/cli/jvm/apiVersionInvalid.out b/compiler/testData/cli/jvm/apiVersionInvalid.out
index d34ed0e0413..6f82a36cb5f 100644
--- a/compiler/testData/cli/jvm/apiVersionInvalid.out
+++ b/compiler/testData/cli/jvm/apiVersionInvalid.out
@@ -1,3 +1,3 @@
 error: unknown API version: 239.42
-Supported API versions: 1.0, 1.1, 1.2, 1.3, 1.4
+Supported API versions: 1.0, 1.1, 1.2, 1.3, 1.4, 1.5 (EXPERIMENTAL)
 COMPILATION_ERROR
diff --git a/compiler/testData/cli/jvm/languageVersionInvalid.out b/compiler/testData/cli/jvm/languageVersionInvalid.out
index 89c42a9061c..dbaf9764522 100644
--- a/compiler/testData/cli/jvm/languageVersionInvalid.out
+++ b/compiler/testData/cli/jvm/languageVersionInvalid.out
@@ -1,3 +1,3 @@
 error: unknown language version: 239.42
-Supported language versions: 1.0, 1.1, 1.2, 1.3, 1.4
+Supported language versions: 1.0, 1.1, 1.2, 1.3, 1.4, 1.5 (EXPERIMENTAL)
 COMPILATION_ERROR
diff --git a/compiler/util/src/org/jetbrains/kotlin/config/LanguageVersionSettings.kt b/compiler/util/src/org/jetbrains/kotlin/config/LanguageVersionSettings.kt
index 10433faa2bf..4f354dc7cbe 100644
--- a/compiler/util/src/org/jetbrains/kotlin/config/LanguageVersionSettings.kt
+++ b/compiler/util/src/org/jetbrains/kotlin/config/LanguageVersionSettings.kt
@@ -240,7 +240,9 @@ enum class LanguageVersion(val major: Int, val minor: Int) : DescriptionAware {
     KOTLIN_1_1(1, 1),
     KOTLIN_1_2(1, 2),
     KOTLIN_1_3(1, 3),
-    KOTLIN_1_4(1, 4);
+    KOTLIN_1_4(1, 4),
+    KOTLIN_1_5(1, 5),
+    ;
 
     val isStable: Boolean
         get() = this <= LATEST_STABLE