diff --git a/ontology/saref4agri.ttl b/ontology/saref4agri.ttl
index f8e85d05cbd681b901b7da1bd08dae3593a951d3..c243901b83aa6fb67c1f7599f1035b79e22d7c96 100644
--- a/ontology/saref4agri.ttl
+++ b/ontology/saref4agri.ttl
@@ -29,6 +29,7 @@
   dcterms:modified "2024-06-05"^^xsd:date ;
   dcterms:publisher <https://www.etsi.org/> ;
   dcterms:source <https://saref.etsi.org/sources/saref4agri/> ;
+  owl:import <https://saref.etsi.org/core/v3.2.1/> ;
   rdfs:seeAlso <https://www.etsi.org/deliver/etsi_ts/103400_103499/10341006/02.01.01_60/ts_10341006v020101p.pdf> ;
   vann:preferredNamespacePrefix "s4agri" ;
   vann:preferredNamespaceUri "https://saref.etsi.org/saref4agri/" ;