diff --git a/maven-plugin-testing-harness/pom.xml b/maven-plugin-testing-harness/pom.xml
index ead20f82..c41c30fd 100644
--- a/maven-plugin-testing-harness/pom.xml
+++ b/maven-plugin-testing-harness/pom.xml
@@ -88,7 +88,7 @@ under the License.
       <!-- correct version must be provided by project depends on Maven version -->
       <groupId>org.codehaus.plexus</groupId>
       <artifactId>plexus-xml</artifactId>
-      <version>4.0.3</version>
+      <version>4.0.4</version>
       <optional>true</optional>
     </dependency>