diff --git a/mirror-nixos-branch.pl b/mirror-nixos-branch.pl
index ead347d..e480aa6 100755
--- a/mirror-nixos-branch.pl
+++ b/mirror-nixos-branch.pl
@@ -225,4 +225,5 @@ system("git push origin $rev:refs/heads/$channelName >&2") == 0 or die;
 system("git push channels $rev:refs/heads/$channelName >&2") == 0 or die;
 
 # Update channel on channels.nixos.org
-$bucketChannels->add_key($channelsDir, $target, { "x-amz-website-redirect-location header" => $target });
+$bucketChannels->add_key($channelsDir, $target, { "x-amz-website-redirect-location" => $target });
+$bucketChannels->add_key("$channelsDir/nixexprs.tar.xz", $target, { "x-amz-website-redirect-location" => "$target/nixexprs.tar.xz" });