Updated to staged aether:0.9.0.M4
diff --git a/pom.xml b/pom.xml
index 51c9132..b90bc50 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
 <!--
- ~ Copyright (c) 2010, 2013 Sonatype, Inc.
+ ~ Copyright (c) 2010, 2014 Sonatype, Inc.
  ~ All rights reserved. This program and the accompanying materials
  ~ are made available under the terms of the Eclipse Public License v1.0
  ~ which accompanies this distribution, and is available at
@@ -118,7 +118,7 @@
     <sonatypeOssDistMgmtSnapshotsId>sonatype-nexus-snapshots</sonatypeOssDistMgmtSnapshotsId>
     <sonatypeOssDistMgmtSnapshotsUrl>https://oss.sonatype.org/content/repositories/snapshots/</sonatypeOssDistMgmtSnapshotsUrl>
     <mavenVersion>3.1.0</mavenVersion>
-    <aetherVersion>0.9.0.M3</aetherVersion>
+    <aetherVersion>0.9.0.M4</aetherVersion>
   </properties>
 
   <dependencyManagement>