diff --git a/wp-includes/script-loader.php b/wp-includes/script-loader.php
index 14027aa52a..f4e37d7164 100644
--- a/wp-includes/script-loader.php
+++ b/wp-includes/script-loader.php
@@ -106,8 +106,8 @@ function wp_default_packages_vendor( $scripts ) {
 	);
 
 	$vendor_scripts_versions = array(
-		'react'                       => '18.3.1-umd',
-		'react-dom'                   => '18.3.1-umd',
+		'react'                       => '18.3.1.1', // Final .1 due to switch to UMD build, can be removed in the next update.
+		'react-dom'                   => '18.3.1.1', // Final .1 due to switch to UMD build, can be removed in the next update.
 		'react-jsx-runtime'           => '18.3.1',
 		'regenerator-runtime'         => '0.14.1',
 		'moment'                      => '2.30.1',
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 7b385dd2f1..aa5bb24308 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.8-alpha-59536';
+$wp_version = '6.8-alpha-59540';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.