diff --git a/README.md b/README.md
index 21d384f..99f4dc5 100644
--- a/README.md
+++ b/README.md
@@ -42,6 +42,9 @@ public class User {
     @OWLDataProperty(iri = "http://xmlns.com/foaf/0.1/accountName")
     private String username;
 
+    @OWLDataProperty(iri = "http://krizik.felk.cvut.cz/ontologies/jb4jsonld/role")
+    private Role role;  // Role is an enum
+
     @Properties
     private Map<String, Set<String>> properties;
     
@@ -57,7 +60,8 @@ public class User {
     "firstName": "http://xmlns.com/foaf/0.1/firstName",
     "lastName": "http://xmlns.com/foaf/0.1/lastName",
     "accountName": "http://xmlns.com/foaf/0.1/accountName",
-    "isAdmin": "http://krizik.felk.cvut.cz/ontologies/jb4jsonld/isAdmin"
+    "isAdmin": "http://krizik.felk.cvut.cz/ontologies/jb4jsonld/isAdmin",
+    "role": "http://krizik.felk.cvut.cz/ontologies/jb4jsonld/role"
   },
   "@id": "http://krizik.felk.cvut.cz/ontologies/jb4jsonld#Catherine+Halsey",
   "@type": [
@@ -68,7 +72,8 @@ public class User {
   "isAdmin": true,
   "accountName": "halsey@unsc.org",
   "firstName": "Catherine",
-  "lastName": "Halsey"
+  "lastName": "Halsey",
+  "role": "USER"
 }
 ```
 
diff --git a/pom.xml b/pom.xml
index 1702285..1305215 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>cz.cvut.kbss.jsonld</groupId>
     <artifactId>jb4jsonld</artifactId>
-    <version>0.5.0</version>
+    <version>0.5.1</version>
     <name>JB4JSON-LD</name>
     <description>Java Binding for JSON-LD allows serialization and deserialization of Java POJOs to/from JSON-LD.
         This is the core implementation, which has to be integrated with Jackson, Jersey etc.
@@ -18,7 +18,7 @@
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
 
-        <cz.cvut.kbss.jopa.version>0.13.5</cz.cvut.kbss.jopa.version>
+        <cz.cvut.kbss.jopa.version>0.14.0</cz.cvut.kbss.jopa.version>
 
         <org.junit.jupiter.version>5.6.0</org.junit.jupiter.version>
         <org.mockito.version>2.28.2</org.mockito.version>