diff --git a/src/java.base/share/classes/java/lang/reflect/ClassFileFormatVersion.java b/src/java.base/share/classes/java/lang/reflect/ClassFileFormatVersion.java
index 65d8aa991ceea..81ceaa96f50ea 100644
--- a/src/java.base/share/classes/java/lang/reflect/ClassFileFormatVersion.java
+++ b/src/java.base/share/classes/java/lang/reflect/ClassFileFormatVersion.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2022, 2023, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -268,6 +268,8 @@ public enum ClassFileFormatVersion {
      * The version recognized by the Java Platform, Standard Edition
      * 21.
      *
+     * @since 21
+     *
      * @see <a
      * href="https://docs.oracle.com/javase/specs/jvms/se21/html/index.html">
      * <cite>The Java Virtual Machine Specification, Java SE 21 Edition</cite></a>