diff --git a/src/wp-includes/post.php b/src/wp-includes/post.php
index ea81bbd045..1f2c65e158 100644
--- a/src/wp-includes/post.php
+++ b/src/wp-includes/post.php
@@ -7801,6 +7801,8 @@ function _prime_post_caches( $ids, $update_term_cache = true, $update_meta_cache
  *
  * @global wpdb $wpdb WordPress database abstraction object.
  *
+ * @since 6.4.0
+ *
  * @param int[] $ids ID list.
  */
 function _prime_post_parents_caches( array $ids ) {