--- old/src/java.base/share/classes/java/net/SocketException.java	2019-08-27 17:28:03.038324386 -0700
+++ new/src/java.base/share/classes/java/net/SocketException.java	2019-08-27 17:28:02.846324386 -0700
@@ -35,6 +35,7 @@
  */
 public
 class SocketException extends IOException {
+    @java.io.Serial
     private static final long serialVersionUID = -5935874303556886934L;
 
     /**