--- old/src/java.base/share/classes/java/lang/IncompatibleClassChangeError.java	2019-08-27 17:27:18.494324386 -0700
+++ new/src/java.base/share/classes/java/lang/IncompatibleClassChangeError.java	2019-08-27 17:27:18.270324386 -0700
@@ -35,6 +35,7 @@
  */
 public
 class IncompatibleClassChangeError extends LinkageError {
+    @java.io.Serial
     private static final long serialVersionUID = -4914975503642802119L;
 
     /**