diff --git a/dependencies/UCO-unstable b/dependencies/UCO-unstable
index 08ef73c8..8094ff27 160000
--- a/dependencies/UCO-unstable
+++ b/dependencies/UCO-unstable
@@ -1 +1 @@
-Subproject commit 08ef73c8acc4cf4f105dbfa3c39a82b5241add40
+Subproject commit 8094ff272379a3e4b7b4f67b8129e7e5c13190f1
diff --git a/ontology/CASE-unstable.ttl b/ontology/CASE-unstable.ttl
index 2d9f431b..a97e1a13 100644
--- a/ontology/CASE-unstable.ttl
+++ b/ontology/CASE-unstable.ttl
@@ -8608,12 +8608,6 @@ observable:URLFacet
 			sh:nodeKind sh:BlankNodeOrIRI ;
 			sh:path observable:host ;
 		] ,
-		[
-			sh:class observable:ObservableObject ;
-			sh:maxCount "1"^^xsd:integer ;
-			sh:nodeKind sh:BlankNodeOrIRI ;
-			sh:path observable:userName ;
-		] ,
 		[
 			sh:datatype xsd:integer ;
 			sh:maxCount "1"^^xsd:integer ;
@@ -8656,6 +8650,12 @@ observable:URLFacet
 			sh:maxCount "1"^^xsd:integer ;
 			sh:nodeKind sh:Literal ;
 			sh:path observable:scheme ;
+		] ,
+		[
+			sh:datatype xsd:string ;
+			sh:maxCount "1"^^xsd:integer ;
+			sh:nodeKind sh:Literal ;
+			sh:path observable:userName ;
 		]
 		;
 	sh:targetClass observable:URLFacet ;
@@ -14868,10 +14868,10 @@ observable:userLocationString
 	.
 
 observable:userName
-	a owl:ObjectProperty ;
+	a owl:DatatypeProperty ;
 	rdfs:label "userName"@en ;
 	rdfs:comment "Username used to authenticate to this resource."@en ;
-	rdfs:range observable:ObservableObject ;
+	rdfs:range xsd:string ;
 	.
 
 observable:validityNotAfter