diff --git a/shared/src/main/scala/scala/xml/persistent/CachedFileStorage.scala b/shared/src/main/scala/scala/xml/persistent/CachedFileStorage.scala
index 1a932cc34..41f8d96a7 100644
--- a/shared/src/main/scala/scala/xml/persistent/CachedFileStorage.scala
+++ b/shared/src/main/scala/scala/xml/persistent/CachedFileStorage.scala
@@ -26,6 +26,7 @@ import scala.collection.Iterator
  *
  *  @author Burak Emir
  */
+@deprecated("This class will be removed", "1.3.0")
 abstract class CachedFileStorage(private val file1: File) extends Thread {
 
   private val file2 = new File(file1.getParent, file1.getName + "$")
diff --git a/shared/src/main/scala/scala/xml/persistent/Index.scala b/shared/src/main/scala/scala/xml/persistent/Index.scala
index 249e0b765..f121333ce 100644
--- a/shared/src/main/scala/scala/xml/persistent/Index.scala
+++ b/shared/src/main/scala/scala/xml/persistent/Index.scala
@@ -13,4 +13,5 @@ package persistent
 /**
  * an Index returns some unique key that is part of a node
  */
+@deprecated("This class will be removed", "1.3.0")
 abstract class Index[A] extends Function1[Node, A] {}
diff --git a/shared/src/main/scala/scala/xml/persistent/SetStorage.scala b/shared/src/main/scala/scala/xml/persistent/SetStorage.scala
index abe44be53..c8c44b164 100644
--- a/shared/src/main/scala/scala/xml/persistent/SetStorage.scala
+++ b/shared/src/main/scala/scala/xml/persistent/SetStorage.scala
@@ -19,6 +19,7 @@ import java.io.File
  *
  *  @author Burak Emir
  */
+@deprecated("This class will be removed", "1.3.0")
 class SetStorage(file: File) extends CachedFileStorage(file) {
 
   private val theSet = mutable.HashSet[Node]()