diff --git a/enanomapper-dev.owl b/enanomapper-dev.owl
index 95d49adc..0f5421e7 100644
--- a/enanomapper-dev.owl
+++ b/enanomapper-dev.owl
@@ -47,7 +47,7 @@
         <owl:imports rdf:resource="http://purl.enanomapper.net/onto/internal/iao-ext.owl"/>
         <owl:imports rdf:resource="http://purl.enanomapper.net/onto/internal/endpoints.owl"/>
         <owl:imports rdf:resource="http://purl.enanomapper.net/onto/enanomapper-auto-dev.owl"/>
-        <owl:versionInfo>3-SNAPSHOT</owl:versionInfo>
+        <owl:versionInfo>6.0-SNAPSHOT</owl:versionInfo>
         <dc:contributor>The eNanoMapper Consortium</dc:contributor>
         <rdfs:comment>The eNanoMapper project (www.enanomapper.net) is creating a pan-European computational infrastructure for toxicological data management for ENMs, based on semantic web standards and ontologies. This ontology is an application ontology targeting the full domain of nanomaterial safety assessment. It re-uses several other ontologies including the NPO, CHEMINF, ChEBI, and ENVO. </rdfs:comment>
         <dc:contributor>Nina Jeliazkova</dc:contributor>
diff --git a/enanomapper.owl b/enanomapper.owl
index 94d2121c..a8da1824 100644
--- a/enanomapper.owl
+++ b/enanomapper.owl
@@ -57,7 +57,7 @@
         <owl:imports rdf:resource="http://purl.enanomapper.net/onto/enanomapper-auto.owl"/>
         <rdfs:comment>The eNanoMapper project (www.enanomapper.net) is creating a pan-European computational infrastructure for toxicological data management for engineered nanomaterials (ENMs), based on semantic web standards and ontologies. This ontology is an application ontology targeting the full domain of nanomaterial safety assessment. It re-uses several other ontologies including the NPO, CHEMINF, ChEBI, and ENVO. </rdfs:comment>
         <dc:contributor>The eNanoMapper Consortium</dc:contributor>
-        <owl:versionInfo rdf:datatype="http://www.w3.org/2001/XMLSchema#decimal">4.1</owl:versionInfo>
+        <owl:versionInfo rdf:datatype="http://www.w3.org/2001/XMLSchema#decimal">5.0</owl:versionInfo>
         <dc:contributor>Nina Jeliazkova</dc:contributor>
         <dc:contributor>Janna Hastings</dc:contributor>
         <dc:contributor>Egon Willighagen</dc:contributor>