diff --git a/src/java.base/share/classes/java/lang/classfile/ClassSignature.java b/src/java.base/share/classes/java/lang/classfile/ClassSignature.java
index 57d899eb590..b3050b78a85 100644
--- a/src/java.base/share/classes/java/lang/classfile/ClassSignature.java
+++ b/src/java.base/share/classes/java/lang/classfile/ClassSignature.java
@@ -54,6 +54,7 @@ public sealed interface ClassSignature
      * {@return a class signature}
      * @param superclassSignature the superclass
      * @param superinterfaceSignatures the interfaces
+     * @since 23
      */
     public static ClassSignature of(Signature.ClassTypeSig superclassSignature,
                                     Signature.ClassTypeSig... superinterfaceSignatures) {
@@ -65,6 +66,7 @@ public sealed interface ClassSignature
      * @param typeParameters the type parameters
      * @param superclassSignature the superclass
      * @param superinterfaceSignatures the interfaces
+     * @since 23
      */
     public static ClassSignature of(List<Signature.TypeParam> typeParameters,
                                     Signature.ClassTypeSig superclassSignature,