diff --git a/src/Base/Repositories/AbstractRepository.php b/src/Base/Repositories/AbstractRepository.php
index 2424f20..4b05e2e 100644
--- a/src/Base/Repositories/AbstractRepository.php
+++ b/src/Base/Repositories/AbstractRepository.php
@@ -235,7 +235,9 @@ public function transform(WP_Post $post)
             'post_status' => $post->post_status
         ];
 
-        $data = $this->assignFields($data, $post);
+		$data = apply_filters( 'owc/openkaarten/geodata/rest-add-fields', $data, $post );
+
+		$data = $this->assignFields($data, $post);
 
         return $data;
     }