--- old/src/java.base/share/classes/java/util/EmptyStackException.java	2019-08-27 17:28:53.870324386 -0700
+++ new/src/java.base/share/classes/java/util/EmptyStackException.java	2019-08-27 17:28:53.690324386 -0700
@@ -35,6 +35,7 @@
  */
 public
 class EmptyStackException extends RuntimeException {
+    @java.io.Serial
     private static final long serialVersionUID = 5084686378493302095L;
 
     /**