diff --git a/README.md b/README.md
index 11e428d5e404b0f4c473ebdfb462ab7731bf179d..139805dfb4b4b6b6f8b6a0f6d74356d26127f607 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,7 @@ RDF-UNL equips the Semantic Web with a linguistic framework to soundly represent
 # Repository content :
 
 *  `schema.ttl` is the RDF/OWL schema for UNL 
+*  `java` contains necessary tools to generate `rdf-unl-java-vocabulary` that is used in the unl2rdf class of the [unlTools java project](https://gitlab.tetras-libre.fr/unl/unlTools) 
 *  `documents` contains related papers and documentation
 *  `examples` contains working examples of UNL-RDF, especially the one described in the 2020-06_UNseL_UNL2RDF reference paper