--- a/src/java.base/share/classes/java/lang/reflect/Proxy.java	Thu Aug 29 18:52:30 2019 -0400
+++ b/src/java.base/share/classes/java/lang/reflect/Proxy.java	Thu Aug 29 16:31:34 2019 -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 */