diff --git a/ontology/saref.ttl b/ontology/saref.ttl
index 2fe2eb2000a8b6b2240b13bf765f3f90a0a210d8..cbe81ccebce50f86b39d6d7e8cfb315e3c3394ef 100644
--- a/ontology/saref.ttl
+++ b/ontology/saref.ttl
@@ -2256,3 +2256,18 @@ saref:hasIdentifier a owl:DatatypeProperty ;
     rdfs:label "has identifier"@en ;
     rdfs:comment "Links some entity to its identifier. Extensions of SAREF may define sub-properties such as s4abcd:hasUUID, s4abcd:hasGTIN12, etc."@en ;
     rdfs:seeAlso <https://labs.etsi.org/rep/saref/saref-portal/-/issues/2> .
+
+
+# New in V4.1.1
+
+saref:hasVersion a owl:DatatypeProperty ;
+  rdfs:label "has version"@en ;
+  rdfs:comment "Links some entity (e.g., a device) to its version."@en ;
+  rdfs:range xsd:string ;
+  rdfs:seeAlso <https://labs.etsi.org/rep/saref/saref-core/-/issues/53> .
+  
+saref:hasRevisionNumber a owl:DatatypeProperty ;
+  rdfs:label "has revision number"@en ;
+  rdfs:comment "Links some entity (e.g., a device) to its revision number."@en ;
+  rdfs:range xsd:string ;
+  rdfs:seeAlso <https://labs.etsi.org/rep/saref/saref-core/-/issues/53> .