--- old/src/java.base/share/classes/jdk/internal/util/xml/XMLStreamException.java	2019-08-27 17:29:27.986324386 -0700
+++ new/src/java.base/share/classes/jdk/internal/util/xml/XMLStreamException.java	2019-08-27 17:29:27.778324386 -0700
@@ -37,6 +37,7 @@
  */
 
 public class XMLStreamException extends Exception {
+    @java.io.Serial
     private static final long serialVersionUID = 1L;