--- old/src/java.desktop/share/classes/javax/print/event/PrintJobAttributeEvent.java	2019-09-21 12:30:25.895000000 -0700
+++ new/src/java.desktop/share/classes/javax/print/event/PrintJobAttributeEvent.java	2019-09-21 12:30:25.663000000 -0700
@@ -44,6 +44,7 @@
     /**
      * The printing service attributes that changed.
      */
+    @SuppressWarnings("serial") // Not statically typed as Serializable
     private PrintJobAttributeSet attributes;
 
     /**