diff --git a/kotlin-native/shared/src/main/kotlin/org/jetbrains/kotlin/konan/target/Xcode.kt b/kotlin-native/shared/src/main/kotlin/org/jetbrains/kotlin/konan/target/Xcode.kt
index 0ad58562865..03fd90fc8df 100644
--- a/kotlin-native/shared/src/main/kotlin/org/jetbrains/kotlin/konan/target/Xcode.kt
+++ b/kotlin-native/shared/src/main/kotlin/org/jetbrains/kotlin/konan/target/Xcode.kt
@@ -35,6 +35,13 @@ interface Xcode {
     val additionalTools: String
     val simulatorRuntimes: String
 
+    /**
+     * TODO: `toLowerCase` is deprecated and should be replaced with `lowercase`, but
+     * this code used in buildSrc which depends on bootstrap version of stdlib, so right version
+     * of this function isn't available, please replace warning suppression with right function
+     * when compatible version of bootstrap will be available.
+     */
+    @Suppress("DEPRECATION")
     fun pathToPlatformSdk(platformName: String): String = when (platformName.toLowerCase()) {
         "macosx" -> macosxSdk
         "iphoneos" -> iphoneosSdk