diff --git a/build.properties b/build.properties
index b30de4c1ce..9c841b62a0 100644
--- a/build.properties
+++ b/build.properties
@@ -1,7 +1,7 @@
 classworlds.version=1.2-alpha-6
 plexus.version=1.0-alpha-15
-plexus-archiver.version=1.0-alpha-8-SNAPSHOT
-plexus-utils.version=1.2
+plexus-archiver.version=1.0-alpha-8
+plexus-utils.version=1.4-alpha-1
 plexus-interactivity-api.version=1.0-alpha-4
 commons-cli.version=1.0
 wagon.version=1.0-beta-2
diff --git a/pom.xml b/pom.xml
index 68bc705f3d..0303e8c299 100644
--- a/pom.xml
+++ b/pom.xml
@@ -147,7 +147,7 @@
   </modules>
   <properties>
     <wagonVersion>1.0-beta-2</wagonVersion>
-    <plexusVersion>1.0-alpha-14</plexusVersion>
+    <plexusVersion>1.0-alpha-15</plexusVersion>
   </properties>
   <dependencies>
     <dependency>
@@ -172,12 +172,12 @@
       <dependency>
         <groupId>org.codehaus.plexus</groupId>
         <artifactId>plexus-classworlds</artifactId>
-        <version>1.2-alpha-5</version>
-      </dependency>      
+        <version>1.2-alpha-6</version>
+      </dependency>
       <dependency>
         <groupId>org.codehaus.plexus</groupId>
         <artifactId>plexus-utils</artifactId>
-        <version>1.1</version>
+        <version>1.4-alpha-1</version>
       </dependency>
       <dependency>
         <groupId>org.apache.maven.wagon</groupId>