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

*** 66,75 ****
--- 66,76 ----
   * @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.