diff --git a/wp-includes/block-editor.php b/wp-includes/block-editor.php
index 9edaa49624..9202a8d08d 100644
--- a/wp-includes/block-editor.php
+++ b/wp-includes/block-editor.php
@@ -329,7 +329,7 @@ function get_block_editor_settings( array $custom_settings, $block_editor_contex
 		);
 		$actual_css    = wp_get_global_stylesheet( array( $block_classes['css'] ) );
 		if ( '' !== $actual_css ) {
-			$block_classes['css'] = $actual_css;
+			$block_classes['css']        = $actual_css;
 			$editor_settings['styles'][] = $block_classes;
 		}
 	}
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 28ada923f9..7c8bb76001 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.9-alpha-52055';
+$wp_version = '5.9-alpha-52056';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.