More plexus updates

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1516254 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 596cc85..c645b8b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -151,12 +151,12 @@
     <dependency>
       <groupId>org.codehaus.plexus</groupId>
       <artifactId>plexus-archiver</artifactId>
-      <version>2.3</version>
+      <version>2.4.3</version>
     </dependency>
     <dependency>
       <groupId>org.codehaus.plexus</groupId>
       <artifactId>plexus-utils</artifactId>
-      <version>3.0.9</version>
+      <version>3.0.15</version>
     </dependency>
     <dependency>
       <groupId>org.apache.maven.shared</groupId>
@@ -171,7 +171,7 @@
     <dependency>
       <groupId>org.codehaus.plexus</groupId>
       <artifactId>plexus-io</artifactId>
-      <version>2.0.6</version>
+      <version>2.0.9</version>
     </dependency>
 
     <!-- shared -->