diff --git a/pisi-spec.rng b/pisi-spec.rng
index 260c10df..59af0d73 100644
--- a/pisi-spec.rng
+++ b/pisi-spec.rng
@@ -220,6 +220,7 @@
                 <value>CCPL-Attribution-3.0</value>
                 <value>CCPL-Attribution-NonCommercial-NoDerivs-2.0</value>
                 <value>CCPL-Attribution-NonCommercial-NoDerivs-2.5</value>
+                <value>CCPL-Attribution-NonCommercial-NoDerivs-3.0</value>
                 <value>CCPL-Attribution-ShareAlike-2.0</value>
                 <value>CCPL-Attribution-ShareAlike-2.5</value>
                 <value>CCPL-Attribution-ShareAlike-3.0</value>