diff --git a/Classes/Service/IndexService.php b/Classes/Service/IndexService.php
index 8e5ab50..2337b5b 100644
--- a/Classes/Service/IndexService.php
+++ b/Classes/Service/IndexService.php
@@ -46,7 +46,7 @@ public function add(Document $document)
         try {
             if ($this->client->isHealthy()) {
                 $index = $this->client->index($this->index);
-                $index->addDocuments($document->toArray());
+                $index->addDocuments($document->toArray(), 'id');
             } else {
                 $this->logger->warning('MeiliSearch is not healthy.');
             }