diff --git a/wp-includes/theme.json b/wp-includes/theme.json
index d9ed47816c..3ce416d62e 100644
--- a/wp-includes/theme.json
+++ b/wp-includes/theme.json
@@ -191,7 +191,7 @@
 			"text": true
 		},
 		"shadow": {
-			"defaultPresets": true,
+			"defaultPresets": false,
 			"presets": [
 				{
 					"name": "Natural",
diff --git a/wp-includes/version.php b/wp-includes/version.php
index da7a0527cb..1905f6890a 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.6-alpha-57826';
+$wp_version = '6.6-alpha-57827';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.