diff --git a/ontocomp/pom.xml b/ontocomp/pom.xml
index 226eed7..99e2b82 100644
--- a/ontocomp/pom.xml
+++ b/ontocomp/pom.xml
@@ -76,7 +76,7 @@
 		<maven.compiler.source>1.8</maven.compiler.source>
 		<maven.compiler.target>1.8</maven.compiler.target>
 
-        <owlapi.version>4.5.9</owlapi.version>
+        <owlapi.version>5.5.1</owlapi.version>
         <protege.version>5.6.5</protege.version>
 
 		<bundle.classpath>.</bundle.classpath>