Use forkCount instead of deprecated forkMode
diff --git a/pom.xml b/pom.xml
index 7fece44..9224698 100644
--- a/pom.xml
+++ b/pom.xml
@@ -72,7 +72,8 @@
           </dependency>
         </dependencies>
         <configuration>
-          <forkMode>pertest</forkMode>
+          <forkCount>1</forkCount>
+          <reuseForks>false</reuseForks>
           <argLine>-enableassertions -Djava.util.logging.config.file=${user.home}/logging.properties -Xdebug -Xrunjdwp:transport=dt_socket,server=y,address=8000,suspend=n -Xmx2048m</argLine>
           <failIfNoTests>false</failIfNoTests>
           <includes>