diff --git a/util/manifests/init.pp b/util/manifests/init.pp
index 4a9ca2b..025e60d 100644
--- a/util/manifests/init.pp
+++ b/util/manifests/init.pp
@@ -4,6 +4,8 @@
 #
 #   $name:
 #       Destination directory.
+#   $ensure:
+#       If 'latest', remove target and re-extract when source file changes.
 #   $source:
 #       File to extract.
 #   $strip:
@@ -19,7 +21,19 @@
 #    source => "/usr/local/src/moin-1.8.8.tar.gz",
 #}
 #
-define util::extract::tar($source, $strip=0, $preserve=false) {
+define util::extract::tar($source, $ensure=present, $strip=0, $preserve=false) {
+
+    case $ensure {
+        latest: {
+            exec { "tar-rmdir-${name}":
+                path        => "/bin:/usr/bin:/sbin:/usr/sbin",
+                command     => "rm -fr ${name}",
+                before      => File["${name}"],
+                subscribe   => File["${source}"],
+                refreshonly => true,
+            }
+        }
+    }
 
     file { "${name}":
         ensure => directory,
@@ -40,10 +54,10 @@ define util::extract::tar($source, $strip=0, $preserve=false) {
         $command = "${cat} ${source} | tar xf - --strip-components=${strip} -C ${name} --no-same-owner --no-same-permissions"
     }
 
-    exec { "extract-tar-${name}":
+    exec { "tar-extract-${name}":
         path    => "/bin:/usr/bin:/sbin:/usr/sbin",
         command => $command,
-        require => [ File["${name}"], ],
+        require => File["${name}"],
         unless  => "test -n \"$(ls -A ${name})\"",
     }