--- old/src/java.base/share/classes/java/net/SocketTimeoutException.java	2019-08-27 17:28:04.134324386 -0700
+++ new/src/java.base/share/classes/java/net/SocketTimeoutException.java	2019-08-27 17:28:03.930324386 -0700
@@ -32,6 +32,7 @@
  */
 
 public class SocketTimeoutException extends java.io.InterruptedIOException {
+    @java.io.Serial
     private static final long serialVersionUID = -8846654841826352300L;
 
     /**