diff --git a/mod.ttl b/mod.ttl
index 03aa3f4..6cf071a 100644
--- a/mod.ttl
+++ b/mod.ttl
@@ -1298,6 +1298,42 @@ mod:authorProperty  rdf:type                owl:DatatypeProperty ;
 
 
 
+### https://w3id.org/mod#modifiedProperty
+mod:modifiedProperty
+                    rdf:type               owl:DatatypeProperty ;
+                    rdfs:label              "object modification date property"@en ,
+                                            "propriété de date de modification des objets"@fr ;
+                    rdfs:domain             mod:SemanticArtefactDistribution ;
+                    rdfs:range              xsd:anyURI ;
+                    dcterms:description     "MOD: Property used to specify the date of modification of a class or another object in the ontology."@en ;
+                    rdfs:isDefinedBy        <https://w3id.org/mod> ;
+                    dcterms:issued          "2024-05-30"^^xsd:date ;
+                    pav:derivedFrom         <http://www.isibang.ac.in/ns/mod/3.1> ;
+                    pav:importedOn          "2024-05-30"^^xsd:date ;
+                    
+            #OPTIONAL STATEMENTS
+                    prov:wasInfluencedBy    "MIRO guidelines: E.7" ,
+                                            "FAIR principle: R1" .
+
+
+
+### https://w3id.org/mod#createdProperty
+mod:createdProperty rdf:type               owl:DatatypeProperty ;
+                    rdfs:label              "object creation date property"@en ,
+                                            "propriété de date de création des objets"@fr ;
+                    rdfs:domain             mod:SemanticArtefactDistribution ;
+                    rdfs:range              xsd:anyURI ;
+                    dcterms:description     "MOD: Property used to specify the date of creation of a class or another object in the ontology."@en ;
+                    rdfs:isDefinedBy        <https://w3id.org/mod> ;
+                    dcterms:issued          "2024-05-30"^^xsd:date ;
+                    pav:derivedFrom         <http://www.isibang.ac.in/ns/mod/3.1> ;
+                    pav:importedOn          "2024-05-30"^^xsd:date ;
+                    
+            #OPTIONAL STATEMENTS
+                    prov:wasInfluencedBy    "MIRO guidelines: E.7" ,
+                                            "FAIR principle: R1" .
+
+
 ### https://w3id.org/mod#obsoleteProperty
 mod:obsoleteProperty
                     rdf:type               owl:DatatypeProperty ;