diff --git a/dev-libs/log4cxx/metadata.xml b/dev-libs/log4cxx/metadata.xml
index bfff4138d1431..3d3ee44f441dd 100644
--- a/dev-libs/log4cxx/metadata.xml
+++ b/dev-libs/log4cxx/metadata.xml
@@ -1,8 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
 <pkgmetadata>
-<!-- maintainer-needed -->
-<use>
-  <flag name="smtp">Offer SMTP support via <pkg>net-libs/libesmtp</pkg></flag>
-</use>
+	<!-- maintainer-needed -->
+	<use>
+		<flag name="smtp">Offer SMTP support via <pkg>net-libs/libesmtp</pkg></flag>
+	</use>
+	<upstream>
+		<remote-id type="github">apache/logging-log4cxx</remote-id>
+	</upstream>
 </pkgmetadata>