diff --git a/pom.xml b/pom.xml
index 307bf706..77c2e8b6 100644
--- a/pom.xml
+++ b/pom.xml
@@ -164,7 +164,7 @@
     <dependency>
       <groupId>org.codehaus.plexus</groupId>
       <artifactId>plexus-classworlds</artifactId>
-      <version>2.8.0</version>
+      <version>2.9.0</version>
     </dependency>
 
     <!-- sbt incremental compiler -->