diff --git a/includes/class-create-block-theme-api.php b/includes/class-create-block-theme-api.php
index 604fa75b..bf570859 100644
--- a/includes/class-create-block-theme-api.php
+++ b/includes/class-create-block-theme-api.php
@@ -382,7 +382,7 @@ function rest_save_theme( $request ) {
 			CBT_Theme_Styles::clear_user_styles_customizations();
 		}
 
-		wp_cache_flush();
+		wp_get_theme()->cache_delete();
 
 		return new WP_REST_Response(
 			array(