--- old/src/java.base/share/classes/java/net/NetPermission.java	2019-08-27 17:28:00.398324386 -0700
+++ new/src/java.base/share/classes/java/net/NetPermission.java	2019-08-27 17:28:00.174324386 -0700
@@ -175,6 +175,7 @@
  */
 
 public final class NetPermission extends BasicPermission {
+    @java.io.Serial
     private static final long serialVersionUID = -8343910153355041693L;
 
     /**