diff --git a/nixng/containers/hydra/hydra.nix b/nixng/containers/hydra/hydra.nix
index ad2249c..af29d0c 100644
--- a/nixng/containers/hydra/hydra.nix
+++ b/nixng/containers/hydra/hydra.nix
@@ -86,7 +86,7 @@ makeSystem {
               nix-collect-garbage -d
             '';
         in [
-          "0 4 * * * ${storegc}"
+          "0 4 * * * root ${storegc}"
         ];
       };