diff --git a/mirror-nixos-branch.pl b/mirror-nixos-branch.pl
index e9226c8..1ee12e0 100755
--- a/mirror-nixos-branch.pl
+++ b/mirror-nixos-branch.pl
@@ -73,7 +73,7 @@ sub fetch {
 my $releaseName = $releaseInfo->{nixname} or die;
 $releaseName =~ /-([0-9].+)/ or die;
 my $releaseVersion = $1;
-my $evalId = $releaseInfo->{jobsetevals}->[0] or die;
+my $evalId = $releaseInfo->{jobsetevals}->[-1] or die;
 my $evalUrl = "https://hydra.nixos.org/eval/$evalId";
 my $evalInfo = decode_json(fetch($evalUrl, 'application/json'));
 my $releasePrefix = "$channelDirRel/$releaseName";