diff --git a/wp-includes/version.php b/wp-includes/version.php
index 9b2112a57b..893cdaf811 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.0-alpha-43541';
+$wp_version = '5.0-alpha-43542';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.
diff --git a/wp-login.php b/wp-login.php
index b0117ed8fa..263a19637b 100644
--- a/wp-login.php
+++ b/wp-login.php
@@ -588,8 +588,12 @@ switch ( $action ) {
 		 * Fires before the lost password form.
 		 *
 		 * @since 1.5.1
+		 * @since 5.0.0 Added the `$errors` parameter.
+		 *
+		 * @param WP_Error $errors A `WP_Error` object containing any errors generated by using invalid
+		 *                         credentials. Note that the error object may not contain any errors.
 		 */
-		do_action( 'lost_password' );
+		do_action( 'lost_password', $errors );
 
 		login_header( __( 'Lost Password' ), '<p class="message">' . __( 'Please enter your username or email address. You will receive a link to create a new password via email.' ) . '</p>', $errors );