diff --git a/ew.ontology/pom.xml b/ew.ontology/pom.xml
index fedba24..f4ffd27 100644
--- a/ew.ontology/pom.xml
+++ b/ew.ontology/pom.xml
@@ -55,7 +55,7 @@
 		<dependency>
 			<groupId>org.apache.jena</groupId>
 			<artifactId>jena-iri</artifactId>
-			<version>3.16.0</version>
+			<version>4.1.0</version>
 			<exclusions>
         		<exclusion>
           			<groupId>org.slf4j</groupId>