diff --git a/dev-perl/Alien-GMP/metadata.xml b/dev-perl/Alien-GMP/metadata.xml
index 2751fe2408b57..94e0179e07f3c 100644
--- a/dev-perl/Alien-GMP/metadata.xml
+++ b/dev-perl/Alien-GMP/metadata.xml
@@ -1,8 +1,13 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
 <pkgmetadata>
-        <maintainer type="project">
-                <email>perl@gentoo.org</email>
-                <name>Gentoo Perl Project</name>
-        </maintainer>
+	<maintainer type="project">
+		<email>perl@gentoo.org</email>
+		<name>Gentoo Perl Project</name>
+	</maintainer>
+	<upstream>
+		<remote-id type="cpan">Alien-GMP</remote-id>
+		<remote-id type="cpan-module">Alien::GMP</remote-id>
+		<remote-id type="github">PerlAlien/Alien-GMP</remote-id>
+	</upstream>
 </pkgmetadata>