--- old/src/java.base/share/classes/java/nio/file/AccessDeniedException.java	2019-08-27 17:28:09.350324386 -0700
+++ new/src/java.base/share/classes/java/nio/file/AccessDeniedException.java	2019-08-27 17:28:09.174324386 -0700
@@ -40,6 +40,7 @@
 public class AccessDeniedException
     extends FileSystemException
 {
+    @java.io.Serial
     private static final long serialVersionUID = 4943049599949219617L;
 
     /**