diff --git a/wp-includes/rest-api/endpoints/class-wp-rest-site-health-controller.php b/wp-includes/rest-api/endpoints/class-wp-rest-site-health-controller.php
index 43e6676eff..18d67dc2dd 100644
--- a/wp-includes/rest-api/endpoints/class-wp-rest-site-health-controller.php
+++ b/wp-includes/rest-api/endpoints/class-wp-rest-site-health-controller.php
@@ -153,7 +153,7 @@ class WP_REST_Site_Health_Controller extends WP_REST_Controller {
 				'methods'             => 'GET',
 				'callback'            => array( $this, 'get_directory_sizes' ),
 				'permission_callback' => function() {
-					return $this->validate_request_permission( 'debug_enabled' ) && ! is_multisite();
+					return $this->validate_request_permission( 'directory_sizes' ) && ! is_multisite();
 				},
 			)
 		);
@@ -170,7 +170,7 @@ class WP_REST_Site_Health_Controller extends WP_REST_Controller {
 					'methods'             => 'GET',
 					'callback'            => array( $this, 'test_page_cache' ),
 					'permission_callback' => function () {
-						return $this->validate_request_permission( 'view_site_health_checks' );
+						return $this->validate_request_permission( 'page_cache' );
 					},
 				),
 			)
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 2307a489e9..440c551251 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.4-alpha-56488';
+$wp_version = '6.4-alpha-56489';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.