src/java.base/share/classes/java/lang/ClassCircularityError.java

*** 31,40 ****
--- 31,41 ----
   *
   * @author     unascribed
   * @since      1.0
   */
  public class ClassCircularityError extends LinkageError {
+     @java.io.Serial
      private static final long serialVersionUID = 1054362542914539689L;
  
      /**
       * Constructs a {@code ClassCircularityError} with no detail message.
       */