diff --git a/core/modules/rest/src/Tests/RESTTestBase.php b/core/modules/rest/src/Tests/RESTTestBase.php
index 751e4de..13327cb 100644
--- a/core/modules/rest/src/Tests/RESTTestBase.php
+++ b/core/modules/rest/src/Tests/RESTTestBase.php
@@ -411,12 +411,14 @@ protected function enableService($resource_type, $method = 'GET', $format = NULL
         $resource_config->delete();
       }
     }
+    $this->rebuildCache();
   }
 
   /**
    * Rebuilds routing caches.
    */
   protected function rebuildCache() {
+    $this->container->get('router.builder')->rebuildIfNeeded();
   }
 
   /**