diff --git a/src/lib/Hydra/View/NARInfo.pm b/src/lib/Hydra/View/NARInfo.pm
index bf8711a4..801fc06a 100644
--- a/src/lib/Hydra/View/NARInfo.pm
+++ b/src/lib/Hydra/View/NARInfo.pm
@@ -6,6 +6,8 @@ use File::Basename;
 use Hydra::Helper::CatalystUtils;
 use MIME::Base64;
 use Nix::Manifest;
+use Nix::Store;
+use Nix::Utils;
 use Hydra::Helper::Nix;
 use base qw/Catalyst::View/;