diff --git a/src/wp-includes/functions.php b/src/wp-includes/functions.php
index 043491e310..0ba059ba8e 100644
--- a/src/wp-includes/functions.php
+++ b/src/wp-includes/functions.php
@@ -4533,6 +4533,7 @@ function wp_parse_list( $list ) {
  * Cleans up an array, comma- or space-separated list of IDs.
  *
  * @since 3.0.0
+ * @since 5.1.0 Refactored to use wp_parse_list().
  *
  * @param array|string $list List of IDs.
  * @return int[] Sanitized array of IDs.
@@ -4547,6 +4548,7 @@ function wp_parse_id_list( $list ) {
  * Cleans up an array, comma- or space-separated list of slugs.
  *
  * @since 4.7.0
+ * @since 5.1.0 Refactored to use wp_parse_list().
  *
  * @param array|string $list List of slugs.
  * @return string[] Sanitized array of slugs.