diff --git a/ontology/saref4agri.ttl b/ontology/saref4agri.ttl
index 76ca37f0189e5337cb2f6e5018a0a582aac682a8..f8e85d05cbd681b901b7da1bd08dae3593a951d3 100644
--- a/ontology/saref4agri.ttl
+++ b/ontology/saref4agri.ttl
@@ -25,16 +25,16 @@
     <https://www.linkedin.com/in/mderoode> ;
   dcterms:contributor <https://www.researchgate.net/profile/Jack_Verhoosel> ;
   dcterms:description "SAREF4AGRI is an extension of SAREF for the agriculture and food domain. SAREF4AGRI is specified and published by ETSI in the TS 103 410-6 associated to this ontology file. The list of use cases, standards and requirements that guided the creation of SAREF4AGRI are described in the associated ETSI TR 103 511."@en ;
-  dcterms:issued "2019-04-30"^^xsd:date ;
   dcterms:license <https://forge.etsi.org/etsi-software-license> ;
-  dcterms:modified "2020-06-05"^^xsd:date ;
+  dcterms:modified "2024-06-05"^^xsd:date ;
   dcterms:publisher <https://www.etsi.org/> ;
   dcterms:source <https://saref.etsi.org/sources/saref4agri/> ;
-  rdfs:seeAlso <https://www.etsi.org/deliver/etsi_ts/103400_103499/10341006/01.01.02_60/ts_10341006v010102p.pdf> ;
+  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/" ;
-  owl:versionIRI <https://saref.etsi.org/saref4agri/v1.1.2/> ;
-  owl:versionInfo "v1.1.2" .
+  owl:versionIRI <https://saref.etsi.org/saref4agri/v2.1.1/> ;
+  owl:priorVersion <https://saref.etsi.org/saref4agri/v1.1.2/> ;
+  owl:versionInfo "v2.1.1" .
 
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 #    Annotation properties