diff --git a/src/cco-modules/TimeOntology.ttl b/src/cco-modules/TimeOntology.ttl
index 83e1393..2d6bd83 100644
--- a/src/cco-modules/TimeOntology.ttl
+++ b/src/cco-modules/TimeOntology.ttl
@@ -11,13 +11,13 @@
 @base <https://www.commoncoreontologies.org/TimeOntology> .
 
 <https://www.commoncoreontologies.org/TimeOntology> rdf:type owl:Ontology ;
-                                                     owl:versionIRI <https://www.commoncoreontologies.org/2024-11-06/TimeOntology> ;
+                                                     owl:versionIRI <https://www.commoncoreontologies.org/2026-04-04/TimeOntology> ;
                                                      owl:imports cco:ExtendedRelationOntology ;
                                                      dcterms:license "BSD 3-Clause: https://github.com/CommonCoreOntology/CommonCoreOntologies/blob/master/LICENSE"@en ;
                                                      dcterms:rights "CUBRC Inc., see full license."@en ;
                                                      rdfs:comment "This ontology is designed to represent temporal regions and the relations that hold between them."@en ;
                                                      rdfs:label "Time Ontology"@en ;
-                                                     owl:versionInfo "Version 2.0"@en .
+                                                     owl:versionInfo "Version 2.1"@en .
 
 #################################################################
 #    Annotation properties
diff --git a/src/cco-modules/UnitsOfMeasureOntology.ttl b/src/cco-modules/UnitsOfMeasureOntology.ttl
index e57f75f..aaca61d 100644
--- a/src/cco-modules/UnitsOfMeasureOntology.ttl
+++ b/src/cco-modules/UnitsOfMeasureOntology.ttl
@@ -12,13 +12,13 @@
 @base <https://www.commoncoreontologies.org/UnitsOfMeasureOntology> .
 
 <https://www.commoncoreontologies.org/UnitsOfMeasureOntology> rdf:type owl:Ontology ;
-                                                                                     owl:versionIRI <https://www.commoncoreontologies.org/2024-11-06/UnitsOfMeasureOntology> ;
+                                                                                     owl:versionIRI <https://www.commoncoreontologies.org/2026-04-04/UnitsOfMeasureOntology> ;
                                                                                      owl:imports <https://www.commoncoreontologies.org/InformationEntityOntology> ;
                                                                                      dcterms:license "BSD 3-Clause: https://github.com/CommonCoreOntology/CommonCoreOntologies/blob/master/LICENSE"@en ;
                                                                                      dcterms:rights "CUBRC Inc., see full license."@en ;
                                                                                      rdfs:comment "This ontology is designed to represent standard measurement units that are used when measuring various attributes of entities."@en ;
                                                                                      rdfs:label "Units of Measure Ontology"@en ;
-                                                                                     owl:versionInfo "Version 2.0"@en .
+                                                                                     owl:versionInfo "Version 2.1"@en .
 
 #################################################################
 #    Annotation properties