diff --git a/src/refimpl-tests/pom.xml b/src/refimpl-tests/pom.xml
index 3a3c1e93..6b3eb246 100644
--- a/src/refimpl-tests/pom.xml
+++ b/src/refimpl-tests/pom.xml
@@ -20,7 +20,7 @@
     <plugins>
       <plugin>
         <artifactId>maven-surefire-plugin</artifactId>
-        <version>3.5.4</version>
+        <version>3.5.6</version>
         <configuration>
           <useModulePath>false</useModulePath> <!-- https://issues.apache.org/jira/browse/SUREFIRE-1809 -->
           <useFile>false</useFile>