diff --git a/x11-themes/papirus-folders/metadata.xml b/x11-themes/papirus-folders/metadata.xml
index d68ff96..75e0ba1 100644
--- a/x11-themes/papirus-folders/metadata.xml
+++ b/x11-themes/papirus-folders/metadata.xml
@@ -1,8 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
 <pkgmetadata>
-  <maintainer type="person">
-    <email>gentoo@tastytea.de</email>
-    <name>tastytea</name>
-  </maintainer>
+	<maintainer type="person">
+		<email>gentoo@tastytea.de</email>
+		<name>tastytea</name>
+	</maintainer>
+	<upstream>
+		<remote-id type="github">PapirusDevelopmentTeam/papirus-folders</remote-id>
+	</upstream>
 </pkgmetadata>