diff --git a/wp-admin/includes/ms.php b/wp-admin/includes/ms.php
index f0660f4f56..a1548f9bb0 100644
--- a/wp-admin/includes/ms.php
+++ b/wp-admin/includes/ms.php
@@ -160,10 +160,12 @@ function wpmu_delete_user( $id ) {
 	 * Fires before a user is deleted from the network.
 	 *
 	 * @since MU (3.0.0)
+	 * @since 5.5.0 Added the `$user` parameter.
 	 *
-	 * @param int $id ID of the user about to be deleted from the network.
+	 * @param int     $id   ID of the user about to be deleted from the network.
+	 * @param WP_User $user WP_User object of the user about to be deleted from the network.
 	 */
-	do_action( 'wpmu_delete_user', $id );
+	do_action( 'wpmu_delete_user', $id, $user );
 
 	$blogs = get_blogs_of_user( $id );
 
@@ -200,7 +202,7 @@ function wpmu_delete_user( $id ) {
 	clean_user_cache( $user );
 
 	/** This action is documented in wp-admin/includes/user.php */
-	do_action( 'deleted_user', $id, null );
+	do_action( 'deleted_user', $id, null, $user );
 
 	return true;
 }
diff --git a/wp-admin/includes/user.php b/wp-admin/includes/user.php
index 4c5a895844..78deb2552e 100644
--- a/wp-admin/includes/user.php
+++ b/wp-admin/includes/user.php
@@ -358,12 +358,14 @@ function wp_delete_user( $id, $reassign = null ) {
 	 * Fires immediately before a user is deleted from the database.
 	 *
 	 * @since 2.0.0
+	 * @since 5.5.0 Added the `$user` parameter.
 	 *
 	 * @param int      $id       ID of the user to delete.
 	 * @param int|null $reassign ID of the user to reassign posts and links to.
 	 *                           Default null, for no reassignment.
+	 * @param WP_User  $user     WP_User object of the user to delete.
 	 */
-	do_action( 'delete_user', $id, $reassign );
+	do_action( 'delete_user', $id, $reassign, $user );
 
 	if ( null === $reassign ) {
 		$post_types_to_delete = array();
@@ -435,12 +437,14 @@ function wp_delete_user( $id, $reassign = null ) {
 	 * Fires immediately after a user is deleted from the database.
 	 *
 	 * @since 2.9.0
+	 * @since 5.5.0 Added the `$user` parameter.
 	 *
 	 * @param int      $id       ID of the deleted user.
 	 * @param int|null $reassign ID of the user to reassign posts and links to.
 	 *                           Default null, for no reassignment.
+	 * @param WP_User  $user     WP_User object of the deleted user.
 	 */
-	do_action( 'deleted_user', $id, $reassign );
+	do_action( 'deleted_user', $id, $reassign, $user );
 
 	return true;
 }
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 5bd6c029ce..3b1b7fdfd6 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.5-alpha-48312';
+$wp_version = '5.5-alpha-48313';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.