diff --git a/src/Serializer/SerializerAbstract.php b/src/Serializer/SerializerAbstract.php
index <HASH>..<HASH> 100644
--- a/src/Serializer/SerializerAbstract.php
+++ b/src/Serializer/SerializerAbstract.php
@@ -15,7 +15,7 @@ use League\Fractal\Pagination\CursorInterface;
 use League\Fractal\Pagination\PaginatorInterface;
 use League\Fractal\Resource\ResourceInterface;
 
-abstract class SerializerAbstract
+abstract class SerializerAbstract implements Serializer
 {
     /**
      * Serialize a collection.
Added Serializer interface to SerializerAbstract