diff --git a/compiler/tests/org/jetbrains/kotlin/cli/AnalysisHandlerExtensionTest.kt b/compiler/tests/org/jetbrains/kotlin/cli/AnalysisHandlerExtensionTest.kt
index 87c618767bd..9d9c54ffd54 100644
--- a/compiler/tests/org/jetbrains/kotlin/cli/AnalysisHandlerExtensionTest.kt
+++ b/compiler/tests/org/jetbrains/kotlin/cli/AnalysisHandlerExtensionTest.kt
@@ -68,9 +68,16 @@ class AnalysisHandlerExtensionTest : TestCaseWithTmpdir() {
         val plugin = writePlugin(klass)
         val args = listOf("-Xplugin=$plugin", mainKt.absolutePath)
         val outputPath = if (compiler is K2JSCompiler)
-            listOf("-Xforce-deprecated-legacy-compiler-usage", "-output", tmpdir.resolve("out.js").absolutePath)
+            listOf(
+                "-Xforce-deprecated-legacy-compiler-usage",
+                "-language-version", "1.9",
+                "-output", tmpdir.resolve("out.js").absolutePath
+            )
         else
-            listOf("-d", tmpdir.resolve("out").absolutePath)
+            listOf(
+                "-language-version", "1.9",
+                "-d", tmpdir.resolve("out").absolutePath
+            )
 
         val (output, exitCode) = CompilerTestUtil.executeCompiler(compiler, args + outputPath + extras)
         assertEquals(expectedExitCode, exitCode, output)
diff --git a/js/js.tests/test/org/jetbrains/kotlin/integration/JsIrAnalysisHandlerExtensionTest.kt b/js/js.tests/test/org/jetbrains/kotlin/integration/JsIrAnalysisHandlerExtensionTest.kt
index dac81a8be12..44ec191a892 100644
--- a/js/js.tests/test/org/jetbrains/kotlin/integration/JsIrAnalysisHandlerExtensionTest.kt
+++ b/js/js.tests/test/org/jetbrains/kotlin/integration/JsIrAnalysisHandlerExtensionTest.kt
@@ -71,6 +71,7 @@ class JsIrAnalysisHandlerExtensionTest : TestCaseWithTmpdir() {
             "-libraries", libs,
             "-ir-output-dir", outputFile.parentFile.path,
             "-ir-output-name", outputFile.nameWithoutExtension,
+            "-language-version", "1.9",
             mainKt.absolutePath
         )
         CompilerTestUtil.executeCompilerAssertSuccessful(compiler, args + extras)