diff --git a/acct-user/readarr/metadata.xml b/acct-user/readarr/metadata.xml
index 972422721fc51..dbf509ab34a8f 100644
--- a/acct-user/readarr/metadata.xml
+++ b/acct-user/readarr/metadata.xml
@@ -1,5 +1,5 @@
 <?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" proxied="yes">
 		<email>mcrawford@eliteitminds.com</email>