diff --git a/rdf-vocabulary/src/main/java/fr/tetras_libre/rdf/vocabulary/UNL.java b/rdf-vocabulary/src/main/java/fr/tetras_libre/rdf/vocabulary/UNL.java
index 755f2f6c5b172fc51ef07ac7ebe648fadbfa2d33..d35fc2bb09ee7977180f944abce650f040225620 100644
--- a/rdf-vocabulary/src/main/java/fr/tetras_libre/rdf/vocabulary/UNL.java
+++ b/rdf-vocabulary/src/main/java/fr/tetras_libre/rdf/vocabulary/UNL.java
@@ -5,7 +5,7 @@ import org.apache.jena.ontology.*;
  
 /**
  * Vocabulary definitions from /Users/scurt/Projects/rdf-vocabulary/rdf-vocabulary/src/main/vocabs/unlVocabulary.ttl 
- * @author Auto-generated by schemagen on 20 May 2020 16:01 
+ * @author Auto-generated by schemagen on 25 May 2020 04:00 
  */
 public class UNL {
     /** <p>The ontology model that holds the vocabulary terms</p> */
@@ -144,6 +144,8 @@ public class UNL {
     
     public static final DatatypeProperty has_attribute = M_MODEL.createDatatypeProperty( "https://unl.tetras-libre.fr/rdf/schema#has_attribute" );
     
+    public static final DatatypeProperty has_index = M_MODEL.createDatatypeProperty( "https://unl.tetras-libre.fr/rdf/schema#has_index" );
+    
     public static final DatatypeProperty unlDatatypeProperty = M_MODEL.createDatatypeProperty( "https://unl.tetras-libre.fr/rdf/schema#unlDatatypeProperty" );
     
     public static final AnnotationProperty has_id = M_MODEL.createAnnotationProperty( "https://unl.tetras-libre.fr/rdf/schema#has_id" );
diff --git a/rdf-vocabulary/src/main/vocabs/unlVocabulary.ttl b/rdf-vocabulary/src/main/vocabs/unlVocabulary.ttl
index 142ffb7f43a852f29277d5cf7c5b0b94c32c04f6..662be0f1fdd866c00b4bf6add5641ec8361ae38d 100644
--- a/rdf-vocabulary/src/main/vocabs/unlVocabulary.ttl
+++ b/rdf-vocabulary/src/main/vocabs/unlVocabulary.ttl
@@ -2451,6 +2451,12 @@ train to NY = gol(train;NY)"""@en ;
   rdfs:domain :UNL_Structure ;
   rdfs:subPropertyOf :unlAnnotationProperty ;
 .
+:has_index
+  rdf:type owl:DatatypeProperty ;
+  rdfs:domain :UNL_Structure ;
+  rdfs:range xsd:integer ;
+  rdfs:subPropertyOf :unlDatatypeProperty ;
+.
 :has_master_definition
   rdf:type owl:AnnotationProperty ;
   rdfs:domain :UW_Lexeme ;