diff --git a/src/Search/Api/Elasticsearch/Response/SearchResponse.php b/src/Search/Api/Elasticsearch/Response/SearchResponse.php
index a16c1731..76dd4f1c 100644
--- a/src/Search/Api/Elasticsearch/Response/SearchResponse.php
+++ b/src/Search/Api/Elasticsearch/Response/SearchResponse.php
@@ -53,16 +53,6 @@ public function rewind(): void
         $this->cursor = 0;
     }
 
-    public function serialize()
-    {
-        // TODO: Implement serialize() method.
-    }
-
-    public function unserialize($serialized)
-    {
-        // TODO: Implement unserialize() method.
-    }
-
     public function getTypeTotals() : array
     {
         if (isset($this->aggregations['type_agg']['buckets'])) {
diff --git a/src/Search/Api/Query/QueryResponse.php b/src/Search/Api/Query/QueryResponse.php
index 1fb9b923..cfad684c 100644
--- a/src/Search/Api/Query/QueryResponse.php
+++ b/src/Search/Api/Query/QueryResponse.php
@@ -3,9 +3,8 @@
 namespace eLife\Search\Api\Query;
 
 use Iterator;
-use Serializable;
 
-interface QueryResponse extends Iterator, Serializable
+interface QueryResponse extends Iterator
 {
     public function getTotalResults() : int;