diff --git a/lib/CoreProperties.js b/lib/CoreProperties.js
index a6480f70..c55b213b 100644
--- a/lib/CoreProperties.js
+++ b/lib/CoreProperties.js
@@ -3,11 +3,14 @@
 const allowedProperties = {
     title: "dc:title",
     subject: "dc:subject",
-    author: "dc:creator",
     creator: "dc:creator",
     description: "dc:description",
     keywords: "cp:keywords",
-    category: "cp:category"
+    category: "cp:category",
+    created: "dcterms:created",
+    identifier: 'dc:identifier',
+    rights_holder: 'dcterms:rightsHolder',
+    access_rights: 'dcterms:accessRights',
 };
 
 /**