diff --git a/sci-libs/cdd+/metadata.xml b/sci-libs/cdd+/metadata.xml
index a901c2b500043..e793c504506a1 100644
--- a/sci-libs/cdd+/metadata.xml
+++ b/sci-libs/cdd+/metadata.xml
@@ -10,4 +10,7 @@
 	vertices (i.e. extreme points) and extreme rays of a general convex polyhedron in R^d given by a system of linear
 	inequalities: P = { x : A x <= b } where A is an m x d real matrix and b is a real m dimensional vector.
 	</longdescription>
+	<upstream>
+		<remote-id type="github">cddlib/cddplus</remote-id>
+	</upstream>
 </pkgmetadata>