src/java.base/share/classes/java/util/ConcurrentModificationException.java

@@ -66,10 +66,11 @@
  * @see     TreeMap
  * @see     AbstractList
  * @since   1.2
  */
 public class ConcurrentModificationException extends RuntimeException {
+    @java.io.Serial
     private static final long serialVersionUID = -3666751008965953603L;
 
     /**
      * Constructs a ConcurrentModificationException with no
      * detail message.