--- old/src/java.base/share/classes/java/nio/file/LinkPermission.java	2019-08-27 17:28:15.726324386 -0700
+++ new/src/java.base/share/classes/java/nio/file/LinkPermission.java	2019-08-27 17:28:15.550324386 -0700
@@ -67,6 +67,7 @@
  * @see Files#createSymbolicLink
  */
 public final class LinkPermission extends BasicPermission {
+    @java.io.Serial
     static final long serialVersionUID = -1441492453772213220L;
 
     private void checkName(String name) {