--- old/src/java.base/share/classes/java/net/URISyntaxException.java	2019-08-27 17:28:05.378324386 -0700
+++ new/src/java.base/share/classes/java/net/URISyntaxException.java	2019-08-27 17:28:05.170324386 -0700
@@ -38,6 +38,7 @@
 public class URISyntaxException
     extends Exception
 {
+    @java.io.Serial
     private static final long serialVersionUID = 2137979680897488891L;
 
     private String input;