diff --git a/api.owl b/api.owl
index effc0f7..b49aa36 100644
--- a/api.owl
+++ b/api.owl
@@ -7,7 +7,7 @@
      xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
      xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#">
     <owl:Ontology rdf:about="http://purl.org/nampi/owl/api">
-        <owl:versionIRI rdf:resource="http://purl.org/nampi/owl/api/0.1.0"/>
+        <owl:versionIRI rdf:resource="http://purl.org/nampi/owl/api/0.1.1"/>
     </owl:Ontology>
     
 
@@ -293,6 +293,12 @@
     
 
 
+    <!-- http://purl.org/nampi/owl/api#hieararchyRoot -->
+
+    <owl:Class rdf:about="http://purl.org/nampi/owl/api#hieararchyRoot"/>
+    
+
+
     <!-- http://purl.org/nampi/owl/api#hierarchy -->
 
     <owl:Class rdf:about="http://purl.org/nampi/owl/api#hierarchy"/>
@@ -308,6 +314,12 @@
     
 
 
+    <!-- http://purl.org/nampi/owl/api#isAuthor -->
+
+    <owl:Class rdf:about="http://purl.org/nampi/owl/api#isAuthor"/>
+    
+
+
     <!-- http://purl.org/nampi/owl/api#orderByProperty -->
 
     <owl:Class rdf:about="http://purl.org/nampi/owl/api#orderByProperty">