diff --git a/wp-includes/version.php b/wp-includes/version.php
index 908f2f2c59..afebf69a70 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.9-alpha-51920';
+$wp_version = '5.9-alpha-51921';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.