diff --git a/nixos/system/hectic-lab/hectic-lab.nix b/nixos/system/hectic-lab/hectic-lab.nix
index 842c1ffc..93be348c 100644
--- a/nixos/system/hectic-lab/hectic-lab.nix
+++ b/nixos/system/hectic-lab/hectic-lab.nix
@@ -107,6 +107,7 @@ in {
   '';
 
   environment.systemPackages = with pkgs; [
+    tcpdump
     git
     rsync
     python311
@@ -135,7 +136,7 @@ in {
 
   users.users.root.openssh.authorizedKeys.keys = [
     # neuro machine
-    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIA8NYFGff5JaiAQ0TyukWl+bqwGWU/8E6IBRi/YEgSdF root@neuro"
+    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIDfqSROY+rp7amPPiArY3sZM7jTjYBS02csWxF/NeIr/ root@neuro"
     # yukkop
     "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMuP5NSfEQmO6m77xBWZvZ3hk7cw1q2k2vbsFd37rybU u0_a327@localhost"
     "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJBLxMo5icX2Xyng7mcWGnIi+c4ZbVygjPhuU8noCkfZ"