diff --git a/src/Controller/RelatedRorController.php b/src/Controller/RelatedRorController.php
index 39f8de6..3e6b984 100644
--- a/src/Controller/RelatedRorController.php
+++ b/src/Controller/RelatedRorController.php
@@ -125,14 +125,8 @@ class RelatedRorController extends ControllerBase {
         return array_sum($weighted);
     }
 
-    private function cachedJsonResp(array $data) {
-        $data['#cache'] = [
-            'max-age' => 600, 
-            'contexts' => [
-                'url',
-            ]];
-        $resp = new CacheableJsonResponse($data);
-        $resp->addCacheableDependency(CacheableMetadata::createFromRenderArray($data));
+    private function cachedJsonResp(array $data): Response {
+        $resp = new JsonResponse($data, 200, ['cache-control' => 'public, max-age=900']);
         return $resp;
     }