diff --git a/wp-admin/includes/update-core.php b/wp-admin/includes/update-core.php
index cef7ef35f1..ec54ff7ae0 100644
--- a/wp-admin/includes/update-core.php
+++ b/wp-admin/includes/update-core.php
@@ -871,19 +871,20 @@ $_old_files = array(
 global $_new_bundled_files;
 
 $_new_bundled_files = array(
-	'plugins/akismet/'        => '2.0',
-	'themes/twentyten/'       => '3.0',
-	'themes/twentyeleven/'    => '3.2',
-	'themes/twentytwelve/'    => '3.5',
-	'themes/twentythirteen/'  => '3.6',
-	'themes/twentyfourteen/'  => '3.8',
-	'themes/twentyfifteen/'   => '4.1',
-	'themes/twentysixteen/'   => '4.4',
-	'themes/twentyseventeen/' => '4.7',
-	'themes/twentynineteen/'  => '5.0',
-	'themes/twentytwenty/'    => '5.3',
-	'themes/twentytwentyone/' => '5.6',
-	'themes/twentytwentytwo/' => '5.9',
+	'plugins/akismet/'          => '2.0',
+	'themes/twentyten/'         => '3.0',
+	'themes/twentyeleven/'      => '3.2',
+	'themes/twentytwelve/'      => '3.5',
+	'themes/twentythirteen/'    => '3.6',
+	'themes/twentyfourteen/'    => '3.8',
+	'themes/twentyfifteen/'     => '4.1',
+	'themes/twentysixteen/'     => '4.4',
+	'themes/twentyseventeen/'   => '4.7',
+	'themes/twentynineteen/'    => '5.0',
+	'themes/twentytwenty/'      => '5.3',
+	'themes/twentytwentyone/'   => '5.6',
+	'themes/twentytwentytwo/'   => '5.9',
+	'themes/twentytwentythree/' => '6.1',
 );
 
 /**
diff --git a/wp-includes/class-wp-theme.php b/wp-includes/class-wp-theme.php
index 84e7d1f571..f95f49e205 100644
--- a/wp-includes/class-wp-theme.php
+++ b/wp-includes/class-wp-theme.php
@@ -61,20 +61,21 @@ final class WP_Theme implements ArrayAccess {
 	 * @var string[]
 	 */
 	private static $default_themes = array(
-		'classic'         => 'WordPress Classic',
-		'default'         => 'WordPress Default',
-		'twentyten'       => 'Twenty Ten',
-		'twentyeleven'    => 'Twenty Eleven',
-		'twentytwelve'    => 'Twenty Twelve',
-		'twentythirteen'  => 'Twenty Thirteen',
-		'twentyfourteen'  => 'Twenty Fourteen',
-		'twentyfifteen'   => 'Twenty Fifteen',
-		'twentysixteen'   => 'Twenty Sixteen',
-		'twentyseventeen' => 'Twenty Seventeen',
-		'twentynineteen'  => 'Twenty Nineteen',
-		'twentytwenty'    => 'Twenty Twenty',
-		'twentytwentyone' => 'Twenty Twenty-One',
-		'twentytwentytwo' => 'Twenty Twenty-Two',
+		'classic'           => 'WordPress Classic',
+		'default'           => 'WordPress Default',
+		'twentyten'         => 'Twenty Ten',
+		'twentyeleven'      => 'Twenty Eleven',
+		'twentytwelve'      => 'Twenty Twelve',
+		'twentythirteen'    => 'Twenty Thirteen',
+		'twentyfourteen'    => 'Twenty Fourteen',
+		'twentyfifteen'     => 'Twenty Fifteen',
+		'twentysixteen'     => 'Twenty Sixteen',
+		'twentyseventeen'   => 'Twenty Seventeen',
+		'twentynineteen'    => 'Twenty Nineteen',
+		'twentytwenty'      => 'Twenty Twenty',
+		'twentytwentyone'   => 'Twenty Twenty-One',
+		'twentytwentytwo'   => 'Twenty Twenty-Two',
+		'twentytwentythree' => 'Twenty Twenty-Three',
 	);
 
 	/**
diff --git a/wp-includes/default-constants.php b/wp-includes/default-constants.php
index 56754033a0..1192ebb7d3 100644
--- a/wp-includes/default-constants.php
+++ b/wp-includes/default-constants.php
@@ -414,7 +414,7 @@ function wp_templating_constants() {
 	 * @see WP_Theme::get_core_default_theme()
 	 */
 	if ( ! defined( 'WP_DEFAULT_THEME' ) ) {
-		define( 'WP_DEFAULT_THEME', 'twentytwentytwo' );
+		define( 'WP_DEFAULT_THEME', 'twentytwentythree' );
 	}
 
 }
diff --git a/wp-includes/version.php b/wp-includes/version.php
index c03a0f5b21..9a1b0bd135 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.1-alpha-54235';
+$wp_version = '6.1-alpha-54236';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.