--- old/src/java.base/share/classes/java/io/ObjectStreamClass.java	2019-08-27 17:26:53.854324386 -0700
+++ new/src/java.base/share/classes/java/io/ObjectStreamClass.java	2019-08-27 17:26:53.618324386 -0700
@@ -84,7 +84,9 @@
     public static final ObjectStreamField[] NO_FIELDS =
         new ObjectStreamField[0];
 
+    @java.io.Serial
     private static final long serialVersionUID = -6120832682080437368L;
+    @java.io.Serial
     private static final ObjectStreamField[] serialPersistentFields =
         NO_FIELDS;