diff --git a/packager/0install/parallel.xml b/packager/0install/parallel.xml
index e03bf90f..7505a362 100644
--- a/packager/0install/parallel.xml
+++ b/packager/0install/parallel.xml
@@ -113,11 +113,15 @@ xargs or cat | sh.</description>
 		<implementation id="sha1new=50f2180bb9c2e4818b004059e3c7040fa8b72e63" released="2012-04-24" version="20120422">
     <manifest-digest sha256="e78b1de8d4bb6f6fe639c4614e394dfcfc7594c72481caec5959bd648e9da9ed"/>
     <archive extract="parallel-20120422" href="http://ftp.gnu.org/gnu/parallel/parallel-20120422.tar.bz2" size="224881"/>
+  </implementation>
+		<implementation id="sha1new=539f41ac825302b6fa66893e6d9c4f51ed048200" released="2012-05-23" version="20120522">
+    <manifest-digest sha256="346becd7f4a3214720b894b4d637872f33a349e362d43a048d8d4ba1d9693420"/>
+    <archive extract="parallel-20120522" href="http://ftp.gnu.org/gnu/parallel/parallel-20120522.tar.bz2" size="226625"/>
   </implementation>
 	</group>
 </interface>
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