--- a/src/java.base/share/classes/java/security/CodeSource.java	Thu Aug 29 10:09:27 2019 -0700
+++ b/src/java.base/share/classes/java/security/CodeSource.java	Thu Aug 29 10:52:21 2019 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -50,6 +50,7 @@
 
 public class CodeSource implements java.io.Serializable {
 
+    @java.io.Serial
     private static final long serialVersionUID = 4977541819976013951L;
 
     /**
@@ -522,6 +523,7 @@
      * array of bytes. Finally, if any code signers are present then the array
      * of code signers is serialized and written out too.
      */
+    @java.io.Serial
     private void writeObject(java.io.ObjectOutputStream oos)
         throws IOException
     {
@@ -556,6 +558,7 @@
     /**
      * Restores this object from a stream (i.e., deserializes it).
      */
+    @java.io.Serial
     private void readObject(java.io.ObjectInputStream ois)
         throws IOException, ClassNotFoundException
     {