diff --git a/src/wp-includes/class.wp-dependencies.php b/src/wp-includes/class.wp-dependencies.php
index 313faa19ed..9ed26568ed 100644
--- a/src/wp-includes/class.wp-dependencies.php
+++ b/src/wp-includes/class.wp-dependencies.php
@@ -128,11 +128,14 @@ class WP_Dependencies {
 	 * Processes a dependency.
 	 *
 	 * @since 2.6.0
+	 * @since 5.5.0 Added the `$group` parameter.
 	 *
-	 * @param string $handle Name of the item. Should be unique.
+	 * @param string    $handle Name of the item. Should be unique.
+	 * @param int|false $group  Optional. Group level: level (int), no groups (false).
+	 *                          Default false.
 	 * @return bool True on success, false if not set.
 	 */
-	public function do_item( $handle ) {
+	public function do_item( $handle, $group = false ) {
 		return isset( $this->registered[ $handle ] );
 	}
 
diff --git a/src/wp-includes/class.wp-styles.php b/src/wp-includes/class.wp-styles.php
index a84efb278f..2a4780222a 100644
--- a/src/wp-includes/class.wp-styles.php
+++ b/src/wp-includes/class.wp-styles.php
@@ -139,13 +139,16 @@ class WP_Styles extends WP_Dependencies {
 	 * Processes a style dependency.
 	 *
 	 * @since 2.6.0
+	 * @since 5.5.0 Added the `$group` parameter.
 	 *
 	 * @see WP_Dependencies::do_item()
 	 *
-	 * @param string $handle The style's registered handle.
+	 * @param string    $handle The style's registered handle.
+	 * @param int|false $group  Optional. Group level: level (int), no groups (false).
+	 *                          Default false.
 	 * @return bool True on success, false on failure.
 	 */
-	public function do_item( $handle ) {
+	public function do_item( $handle, $group = false ) {
 		if ( ! parent::do_item( $handle ) ) {
 			return false;
 		}