diff --git a/validator/pom.xml b/validator/pom.xml
index bc18ed0c..406c4042 100644
--- a/validator/pom.xml
+++ b/validator/pom.xml
@@ -100,7 +100,7 @@
         <dependency>
             <groupId>org.xmlunit</groupId>
             <artifactId>xmlunit-assertj</artifactId>
-            <version>2.6.3</version>
+            <version>2.9.0</version>
             <scope>test</scope>
         </dependency>
         <dependency>