diff --git a/lib/ontologies_linked_data/config/config.rb b/lib/ontologies_linked_data/config/config.rb
index a01a9faa7..8786e3c3f 100644
--- a/lib/ontologies_linked_data/config/config.rb
+++ b/lib/ontologies_linked_data/config/config.rb
@@ -166,8 +166,9 @@ def goo_namespaces
       conf.add_namespace(:oboinowl_gen,
                          RDF::Vocabulary.new("http://www.geneontology.org/formats/oboInOwl#"))
       conf.add_namespace(:obo_purl, RDF::Vocabulary.new("http://purl.obolibrary.org/obo/"))
-      conf.add_namespace(:umls,
-                         RDF::Vocabulary.new("http://bioportal.bioontology.org/ontologies/umls/"))
+      conf.add_namespace(:umls, RDF::Vocabulary.new("http://bioportal.bioontology.org/ontologies/umls/"))
+      conf.add_namespace(:dcterms, RDF::Vocabulary.new("http://purl.org/dc/terms/"))
+      
       conf.id_prefix = "http://data.bioontology.org/"
       conf.pluralize_models(true)
     end
diff --git a/lib/ontologies_linked_data/models/class.rb b/lib/ontologies_linked_data/models/class.rb
index 20d74a56f..12841bb77 100644
--- a/lib/ontologies_linked_data/models/class.rb
+++ b/lib/ontologies_linked_data/models/class.rb
@@ -77,10 +77,12 @@ def self.urn_id(acronym,classId)
 
       attribute :notes,
             inverse: { on: :note, attribute: :relatedClass }
+      attribute :created, namespace:  :dcterms
+      attribute :modified, namespace:  :dcterms
 
       # Hypermedia settings
       embed :children, :ancestors, :descendants, :parents
-      serialize_default :prefLabel, :synonym, :definition, :cui, :semanticType, :obsolete, :matchType, :ontologyType, :provisional # an attribute used in Search (not shown out of context)
+      serialize_default :prefLabel, :synonym, :definition, :cui, :semanticType, :obsolete, :matchType, :ontologyType, :provisional, :created, :modified # an attribute used in Search (not shown out of context)
       serialize_methods :properties, :childrenCount, :hasChildren
       serialize_never :submissionAcronym, :submissionId, :submission, :descendants
       aggregates childrenCount: [:count, :children]
diff --git a/test/data/ontology_files/BRO_v3.4.owl b/test/data/ontology_files/BRO_v3.4.owl
index aee5caa9c..e8b77122c 100644
--- a/test/data/ontology_files/BRO_v3.4.owl
+++ b/test/data/ontology_files/BRO_v3.4.owl
@@ -618,6 +618,8 @@
         <core:prefLabel rdf:datatype="&xsd;string">Activity</core:prefLabel>
         <desc:definition rdf:datatype="&xsd;string">Activity of interest that may be related to a BRO:Resource.</desc:definition>
         <core:altLabel>activities</core:altLabel>
+        <dct:created rdf:datatype="xsd:dateTime">2015-06-29</dct:created>
+        <dct:modified rdf:datatype="xsd:dateTime">2015-10-01</dct:modified>
     </owl:Class>
     
 
diff --git a/test/models/test_class.rb b/test/models/test_class.rb
index d5d70cd4b..21bb18a40 100644
--- a/test/models/test_class.rb
+++ b/test/models/test_class.rb
@@ -351,4 +351,25 @@ def test_xml_literal_serialization
     assert_equal String, xml_comment.class
     assert_equal comment, xml_comment
   end
+
+  def test_fetch_date_attributes
+    acronym = 'BRO'
+    # Create a 1st version for BRO
+    submission_parse(acronym, "BRO",
+                     "./test/data/ontology_files/BRO_v3.4.owl", 1,
+                     process_rdf: true, index_search: false,
+                     run_metrics: false, reasoning: false,
+                     diff: true, delete: false)
+
+    os = LinkedData::Models::OntologySubmission.where(ontology: [ acronym: acronym ],
+                                                      submissionId: 1).all
+    assert(os.length == 1)
+    os = os[0]
+
+    class_id = RDF::URI.new "http://bioontology.org/ontologies/Activity.owl#Activity"
+    cls = LinkedData::Models::Class.find(class_id).in(os).include(:created, :modified).first
+    assert_equal '2015-06-29', cls.created
+    assert_equal '2015-10-01', cls.modified
+
+  end
 end