diff --git a/ontology/saref4envi.ttl b/ontology/saref4envi.ttl
index 0f1ac4852fb004e65cc5d70426705523fa9c2c24..e51a887c415abe88a85854877aef111a749aa577 100644
--- a/ontology/saref4envi.ttl
+++ b/ontology/saref4envi.ttl
@@ -13,7 +13,7 @@
 @base <https://saref.etsi.org/saref4envi/> .
 
 <https://saref.etsi.org/saref4envi/> rdf:type owl:Ontology ;
-                                      owl:versionIRI <https://saref.etsi.org/saref4envi/v1.2.1/> ;
+                                      owl:versionIRI <https://saref.etsi.org/saref4envi/v1.1.2/> ;
                                       dcterms:description "This ontology extends the SAREF ontology for the environment domain, specifically for the light pollution domain, including concepts like photometers, light, etc."@en ;
                                       dcterms:publisher <https://www.etsi.org/> ;
                                       dcterms:title "SAREF extension for environment"@en ;