diff --git a/fullstack/pregelix/pregelix-dataflow/pom.xml b/fullstack/pregelix/pregelix-dataflow/pom.xml
index ffc000b..37abe57 100644
--- a/fullstack/pregelix/pregelix-dataflow/pom.xml
+++ b/fullstack/pregelix/pregelix-dataflow/pom.xml
@@ -42,8 +42,9 @@
 				</configuration>
 			</plugin>
 			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-clean-plugin</artifactId>
-				<version>2.5</version>
+				<version>2.4.1</version>
 				<configuration>
 					<filesets>
 						<fileset>