diff --git a/wp-includes/user.php b/wp-includes/user.php
index 3a83ca9159..8302837f2b 100644
--- a/wp-includes/user.php
+++ b/wp-includes/user.php
@@ -2574,7 +2574,7 @@ function register_new_user( $user_login, $user_email ) {
 			'registerfail',
 			sprintf(
 				/* translators: %s: Admin email address. */
-				__( 'Couldn&#8217;t register you&hellip; please contact the <a href="mailto:%s">webmaster</a>!' ),
+				__( 'Couldn&#8217;t register you&hellip; please contact the <a href="mailto:%s">site admin</a>!' ),
 				get_option( 'admin_email' )
 			)
 		);
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 22eae4f36f..73f954bb2a 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.5-alpha-48065';
+$wp_version = '5.5-alpha-48066';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.