diff --git a/flake.nix b/flake.nix
index e810b95..e4987f4 100644
--- a/flake.nix
+++ b/flake.nix
@@ -107,7 +107,9 @@
         };
       };
 
-      hydraJobs.test = self.nixosConfigurations.tower.config.system.build.toplevel;
+
+      hydraJobs.tower = self.nixosConfigurations.tower.config.system.build.toplevel;
+      hydraJobs.lisa = self.nixosConfigurations.lisa.config.system.build.toplevel;
 
       packages."x86_64-linux" = {
         tinystatus = import ./packages/tinystatus { inherit pkgs; };
diff --git a/machines/lisa/hardware.nix b/machines/lisa/hardware.nix
index de081f1..a078df1 100644
--- a/machines/lisa/hardware.nix
+++ b/machines/lisa/hardware.nix
@@ -28,12 +28,6 @@
       enable = true;
       port = 2222;
       hostKeys = [ /boot/initrd-ssh-key ];
-      authorizedKeys = lib.splitString "\n"
-        (builtins.readFile (pkgs.fetchurl {
-          url = "https://github.com/JulienMalka.keys";
-          sha256 = "sha256-Dl/KYUQ8OJeBlG3iqQZxVIadN/Y14cEJZufWI3iRcq8=";
-        }));
-
     };
     postCommands = ''
       zpool import zroot
diff --git a/machines/newton/hardware.nix b/machines/newton/hardware.nix
index 212e8e6..abe1f55 100644
--- a/machines/newton/hardware.nix
+++ b/machines/newton/hardware.nix
@@ -21,7 +21,7 @@
       authorizedKeys = lib.splitString "\n"
         (builtins.readFile (pkgs.fetchurl {
           url = "https://github.com/JulienMalka.keys";
-          sha256 = "sha256-Dl/KYUQ8OJeBlG3iqQZxVIadN/Y14cEJZufWI3iRcq8=";
+          sha256 = "sha256-xa8TyZb28M4cwdTDAwqN608xdXZBf8PtvNFk1JxE2lQ=";
         }));
 
     };
diff --git a/machines/tower/default.nix b/machines/tower/default.nix
index 97cb027..a6880e5 100644
--- a/machines/tower/default.nix
+++ b/machines/tower/default.nix
@@ -49,7 +49,8 @@
   services.tailscale.enable = true;
 
   nix.extraOptions = ''
-    experimental-features = nix-command flakes
+    allow-import-from-derivation = true
+      experimental-features = nix-command flakes
   '';
 
   services.openssh.extraConfig = ''