diff --git a/wp-includes/rest-api/endpoints/class-wp-rest-block-renderer-controller.php b/wp-includes/rest-api/endpoints/class-wp-rest-block-renderer-controller.php
index 94d349a1ba..3bdcae5435 100644
--- a/wp-includes/rest-api/endpoints/class-wp-rest-block-renderer-controller.php
+++ b/wp-includes/rest-api/endpoints/class-wp-rest-block-renderer-controller.php
@@ -52,7 +52,7 @@ class WP_REST_Block_Renderer_Controller extends WP_REST_Controller {
 						),
 					),
 					array(
-						'methods'             => WP_REST_Server::READABLE,
+						'methods'             => array( WP_REST_Server::READABLE, WP_REST_Server::CREATABLE ),
 						'callback'            => array( $this, 'get_item' ),
 						'permission_callback' => array( $this, 'get_item_permissions_check' ),
 						'args'                => array(
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 85abb2d145..dcd89a0540 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.5-alpha-47755';
+$wp_version = '5.5-alpha-47756';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.