diff --git a/compiler/util-klib/src/org/jetbrains/kotlin/library/UnresolvedLibrary.kt b/compiler/util-klib/src/org/jetbrains/kotlin/library/UnresolvedLibrary.kt
index 9917fefd105..76afe9f937a 100644
--- a/compiler/util-klib/src/org/jetbrains/kotlin/library/UnresolvedLibrary.kt
+++ b/compiler/util-klib/src/org/jetbrains/kotlin/library/UnresolvedLibrary.kt
@@ -11,13 +11,21 @@ fun UnresolvedLibrary(path: String, libraryVersion: String?, lenient: Boolean):
 sealed class UnresolvedLibrary {
     abstract val path: String
     abstract val libraryVersion: String?
+
+    @Deprecated(DEPRECATED_SUBSTITUTE_PATH, level = DeprecationLevel.ERROR)
     abstract fun substitutePath(newPath: String): UnresolvedLibrary
+
+    companion object {
+        const val DEPRECATED_SUBSTITUTE_PATH =
+            "UnresolvedLibrary.substitutePath() is deprecated and is going to be removed in one of the future Kotlin releases"
+    }
 }
 
 data class RequiredUnresolvedLibrary(
     override val path: String,
     override val libraryVersion: String?
 ) : UnresolvedLibrary() {
+    @Deprecated(DEPRECATED_SUBSTITUTE_PATH, ReplaceWith("copy(path = newPath)"), level = DeprecationLevel.ERROR)
     override fun substitutePath(newPath: String): RequiredUnresolvedLibrary {
         return copy(path = newPath)
     }
@@ -27,6 +35,7 @@ data class LenientUnresolvedLibrary(
     override val path: String,
     override val libraryVersion: String?
 ) : UnresolvedLibrary() {
+    @Deprecated(DEPRECATED_SUBSTITUTE_PATH, ReplaceWith("copy(path = newPath)"), level = DeprecationLevel.ERROR)
     override fun substitutePath(newPath: String): LenientUnresolvedLibrary {
         return copy(path = newPath)
     }