--- old/src/java.base/share/classes/java/lang/module/InvalidModuleDescriptorException.java	2019-08-27 17:27:48.222324386 -0700
+++ new/src/java.base/share/classes/java/lang/module/InvalidModuleDescriptorException.java	2019-08-27 17:27:48.046324386 -0700
@@ -34,6 +34,7 @@
  * @spec JPMS
  */
 public class InvalidModuleDescriptorException extends RuntimeException {
+    @java.io.Serial
     private static final long serialVersionUID = 4863390386809347380L;
 
     /**