--- old/src/java.base/share/classes/java/lang/reflect/Proxy.java	2019-08-27 17:27:52.082324386 -0700
+++ new/src/java.base/share/classes/java/lang/reflect/Proxy.java	2019-08-27 17:27:51.870324386 -0700
@@ -283,6 +283,7 @@
  * @spec JPMS
  */
 public class Proxy implements java.io.Serializable {
+    @java.io.Serial
     private static final long serialVersionUID = -2222568056686623797L;
 
     /** parameter types of a proxy class constructor */