diff --git a/core/modules/rest/src/RequestHandler.php b/core/modules/rest/src/RequestHandler.php
index ee4b890..78b9ecb 100644
--- a/core/modules/rest/src/RequestHandler.php
+++ b/core/modules/rest/src/RequestHandler.php
@@ -7,6 +7,7 @@
 
 namespace Drupal\rest;
 
+use Drupal\Core\Cache\CacheableResponse;
 use Drupal\Core\Render\RenderContext;
 use Drupal\Core\Routing\RouteMatchInterface;
 use Symfony\Component\DependencyInjection\ContainerAwareInterface;
@@ -67,7 +68,7 @@ public function handle(RouteMatchInterface $route_match, Request $request) {
         catch (UnexpectedValueException $e) {
           $error['error'] = $e->getMessage();
           $content = $serializer->serialize($error, $format);
-          return new Response($content, 400, array('Content-Type' => $request->getMimeType($format)));
+          return new CacheableResponse($content, 400, array('Content-Type' => $request->getMimeType($format)));
         }
       }
       else {
@@ -100,7 +101,7 @@ public function handle(RouteMatchInterface $route_match, Request $request) {
       // Add the default content type, but only if the headers from the
       // exception have not specified it already.
       $headers = $e->getHeaders() + array('Content-Type' => $request->getMimeType($format));
-      return new Response($content, $e->getStatusCode(), $headers);
+      return new CacheableResponse($content, $e->getStatusCode(), $headers);
     }
 
     // Serialize the outgoing data for the response, if available.