diff --git a/klab.services.reasoner/pom.xml b/klab.services.reasoner/pom.xml
index e754f1d06..a515542e5 100644
--- a/klab.services.reasoner/pom.xml
+++ b/klab.services.reasoner/pom.xml
@@ -46,7 +46,7 @@
         <dependency>
             <groupId>org.eclipse.rdf4j</groupId>
             <artifactId>rdf4j-rio-datatypes</artifactId>
-            <version>4.3.9</version>
+            <version>5.2.2</version>
         </dependency>
         <dependency>
             <groupId>org.eclipse.rdf4j</groupId>