diff --git a/src/epub/content.opf b/src/epub/content.opf
index 8b38c2f..6228efc 100644
--- a/src/epub/content.opf
+++ b/src/epub/content.opf
@@ -65,7 +65,7 @@
 		<meta property="file-as" refines="#author">Darwin, Charles</meta>
 		<meta property="se:name.person.full-name" refines="#author">Charles Robert Darwin</meta>
 		<meta property="se:url.encyclopedia.wikipedia" refines="#author">https://en.wikipedia.org/wiki/Charles_Darwin</meta>
-		<meta property="se:url.authority.nacoaf" refines="#author">http://id.loc.gov/authorities/n78095637</meta>
+		<meta property="se:url.authority.nacoaf" refines="#author">http://id.loc.gov/authorities/names/n78095637</meta>
 		<meta property="role" refines="#author" scheme="marc:relators">aut</meta>
 		<meta property="role" refines="#author" scheme="marc:relators">ann</meta>
 		<meta property="role" refines="#author" scheme="marc:relators">ill</meta>
@@ -73,7 +73,7 @@
 		<dc:contributor id="artist">Thomas Somerscales</dc:contributor>
 		<meta property="file-as" refines="#artist">Somerscales, Thomas</meta>
 		<meta property="se:url.encyclopedia.wikipedia" refines="#artist">https://en.wikipedia.org/wiki/Thomas_Somerscales</meta>
-		<meta property="se:url.authority.nacoaf" refines="#artist">http://id.loc.gov/authorities/n82098320</meta>
+		<meta property="se:url.authority.nacoaf" refines="#artist">http://id.loc.gov/authorities/names/n82098320</meta>
 		<meta property="role" refines="#artist" scheme="marc:relators">art</meta>
 		<dc:contributor id="transcriber-1">John Hamm</dc:contributor>
 		<meta property="file-as" refines="#transcriber-1">Hamm, John</meta>