diff --git a/nixos/machines/cream/configuration.nix b/nixos/machines/cream/configuration.nix
index 7b0e737..af3a2d2 100644
--- a/nixos/machines/cream/configuration.nix
+++ b/nixos/machines/cream/configuration.nix
@@ -30,6 +30,10 @@
 
   users.users.mainUser.extraGroups = [ "pipewire" ];
 
+  services.udev.extraRules = ''
+    KERNEL="ttyACM[0-9]*", MODE="0666"
+  '';
+
   components.gui.enable = true;
   components.terminal.enable = true;
   components.network.enable = true;
diff --git a/nixos/machines/robi/wireguard.nix b/nixos/machines/robi/wireguard.nix
index 4c5e93a..b80339b 100644
--- a/nixos/machines/robi/wireguard.nix
+++ b/nixos/machines/robi/wireguard.nix
@@ -41,7 +41,7 @@
         }
         {
           # tina
-          publicKey = "v0/cozfHsRUYBXHGUrY7TEZF/ItcQywVphDAQdm9GU0=";
+          publicKey = "RZsuQfWfAQLMm45ZiuNLBwcpL+GEbPYTRTrASFzMCFQ=";
           allowedIPs = [ "10.100.0.5/32" ];
         }
         {