diff --git a/modules/global/general.nix b/modules/global/general.nix
index be1c83c..67c84ff 100644
--- a/modules/global/general.nix
+++ b/modules/global/general.nix
@@ -21,4 +21,10 @@
     # FIX: command-not-found database doesn't exist normally
     channels-update.text = "${pkgs.nix}/bin/nix-channel --update";
   };
+  systemd.services.update-root-nix-channels = {
+    description = "Runs nix-channel --update on startup";
+    wantedBy = [ "multi-user.target" ];
+    serviceConfig.Type = "oneshot";
+    script = "${pkgs.nix}/bin/nix-channel --update";
+  };
 }