--- old/src/java.base/share/classes/java/util/ServiceConfigurationError.java	2019-08-27 17:29:11.810324386 -0700
+++ new/src/java.base/share/classes/java/util/ServiceConfigurationError.java	2019-08-27 17:29:11.646324386 -0700
@@ -39,6 +39,7 @@
     extends Error
 {
 
+    @java.io.Serial
     private static final long serialVersionUID = 74132770414881L;
 
     /**