diff --git a/psi-ms.owl b/psi-ms.owl
index a204a2d..750ee42 100644
--- a/psi-ms.owl
+++ b/psi-ms.owl
@@ -34,13 +34,13 @@
      xmlns:ncbitaxon="http://purl.obolibrary.org/obo/ncbitaxon#"
      xmlns:caloha-reqs-vetted="http://purl.obolibrary.org/obo/caloha-reqs-vetted#">
     <owl:Ontology rdf:about="http://purl.obolibrary.org/obo/ms.owl">
-        <owl:versionIRI rdf:resource="http://purl.obolibrary.org/obo/ms/4.1.126/ms.owl"/>
+        <owl:versionIRI rdf:resource="http://purl.obolibrary.org/obo/ms/4.1.127/ms.owl"/>
         <owl:imports rdf:resource="http://purl.obolibrary.org/obo/pato.owl"/>
         <owl:imports rdf:resource="http://purl.obolibrary.org/obo/stato.owl"/>
         <oboInOwl:NamespaceIdRule rdf:datatype="http://www.w3.org/2001/XMLSchema#string">* MS:$sequence(7,0,9999999)$</oboInOwl:NamespaceIdRule>
         <oboInOwl:NamespaceIdRule rdf:datatype="http://www.w3.org/2001/XMLSchema#string">* PEFF:$sequence(7,0,9999999)$</oboInOwl:NamespaceIdRule>
         <oboInOwl:auto-generated-by rdf:datatype="http://www.w3.org/2001/XMLSchema#string">OBO-Edit 2.3.1</oboInOwl:auto-generated-by>
-        <oboInOwl:date rdf:datatype="http://www.w3.org/2001/XMLSchema#string">17:06:2023 11:30</oboInOwl:date>
+        <oboInOwl:date rdf:datatype="http://www.w3.org/2001/XMLSchema#string">23:06:2023 11:30</oboInOwl:date>
         <oboInOwl:default-namespace rdf:datatype="http://www.w3.org/2001/XMLSchema#string">MS</oboInOwl:default-namespace>
         <oboInOwl:hasOBOFormatVersion rdf:datatype="http://www.w3.org/2001/XMLSchema#string">1.2</oboInOwl:hasOBOFormatVersion>
         <oboInOwl:saved-by rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Joshua Klein</oboInOwl:saved-by>
@@ -70165,6 +70165,12 @@
     <!-- http://purl.obolibrary.org/obo/MS_1003372 -->
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/MS_1003372">
+        <rdfs:subClassOf>
+            <owl:Restriction>
+                <owl:onProperty rdf:resource="http://purl.obolibrary.org/obo/ms#has_regexp"/>
+                <owl:someValuesFrom rdf:resource="http://purl.obolibrary.org/obo/MS_1003384"/>
+            </owl:Restriction>
+        </rdfs:subClassOf>
         <rdfs:subClassOf>
             <owl:Restriction>
                 <owl:onProperty rdf:resource="http://purl.obolibrary.org/obo/ms#part_of"/>
@@ -70189,12 +70195,6 @@
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/MS_1003373">
         <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/MS_1003372"/>
-        <rdfs:subClassOf>
-            <owl:Restriction>
-                <owl:onProperty rdf:resource="http://purl.obolibrary.org/obo/ms#has_value_type"/>
-                <owl:someValuesFrom rdf:resource="http://purl.obolibrary.org/obo/xsd_string"/>
-            </owl:Restriction>
-        </rdfs:subClassOf>
         <rdfs:subClassOf>
             <owl:Restriction>
                 <owl:onProperty rdf:resource="http://purl.obolibrary.org/obo/ms#part_of"/>
@@ -70405,6 +70405,48 @@
     
 
 
+    <!-- http://purl.obolibrary.org/obo/MS_1003384 -->
+
+    <owl:Class rdf:about="http://purl.obolibrary.org/obo/MS_1003384">
+        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/MS_1002479"/>
+        <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">v?(d+).(d+).(d+)(?:-(S+))?</obo:IAO_0000115>
+        <oboInOwl:hasOBONamespace rdf:datatype="http://www.w3.org/2001/XMLSchema#string">MS</oboInOwl:hasOBONamespace>
+        <oboInOwl:id rdf:datatype="http://www.w3.org/2001/XMLSchema#string">MS:1003384</oboInOwl:id>
+        <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">semantic version regexp</rdfs:label>
+    </owl:Class>
+    <owl:Axiom>
+        <owl:annotatedSource rdf:resource="http://purl.obolibrary.org/obo/MS_1003384"/>
+        <owl:annotatedProperty rdf:resource="http://purl.obolibrary.org/obo/IAO_0000115"/>
+        <owl:annotatedTarget rdf:datatype="http://www.w3.org/2001/XMLSchema#string">v?(d+).(d+).(d+)(?:-(S+))?</owl:annotatedTarget>
+        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">PSI:PI</oboInOwl:hasDbXref>
+    </owl:Axiom>
+    
+
+
+    <!-- http://purl.obolibrary.org/obo/MS_1003385 -->
+
+    <owl:Class rdf:about="http://purl.obolibrary.org/obo/MS_1003385">
+        <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/MS_1003373"/>
+        <rdfs:subClassOf>
+            <owl:Restriction>
+                <owl:onProperty rdf:resource="http://purl.obolibrary.org/obo/ms#has_value_type"/>
+                <owl:someValuesFrom rdf:resource="http://purl.obolibrary.org/obo/xsd_string"/>
+            </owl:Restriction>
+        </rdfs:subClassOf>
+        <obo:IAO_0000115 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The versioning of the crosslinking mzIdentML extension document.</obo:IAO_0000115>
+        <oboInOwl:hasOBONamespace rdf:datatype="http://www.w3.org/2001/XMLSchema#string">MS</oboInOwl:hasOBONamespace>
+        <oboInOwl:id rdf:datatype="http://www.w3.org/2001/XMLSchema#string">MS:1003385</oboInOwl:id>
+        <rdfs:label rdf:datatype="http://www.w3.org/2001/XMLSchema#string">mzIdentML crosslinking extension document version</rdfs:label>
+    </owl:Class>
+    <owl:Axiom>
+        <owl:annotatedSource rdf:resource="http://purl.obolibrary.org/obo/MS_1003385"/>
+        <owl:annotatedProperty rdf:resource="http://purl.obolibrary.org/obo/IAO_0000115"/>
+        <owl:annotatedTarget rdf:datatype="http://www.w3.org/2001/XMLSchema#string">The versioning of the crosslinking mzIdentML extension document.</owl:annotatedTarget>
+        <oboInOwl:hasDbXref rdf:datatype="http://www.w3.org/2001/XMLSchema#string">PSI:PI</oboInOwl:hasDbXref>
+    </owl:Axiom>
+    
+
+
     <!-- http://purl.obolibrary.org/obo/MS_4000000 -->
 
     <owl:Class rdf:about="http://purl.obolibrary.org/obo/MS_4000000">