diff --git a/hosts/machine/mafuyu/configuration.nix b/hosts/machine/mafuyu/configuration.nix
index 09e6d4d..b4fe2be 100644
--- a/hosts/machine/mafuyu/configuration.nix
+++ b/hosts/machine/mafuyu/configuration.nix
@@ -86,5 +86,23 @@
     "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOHP3Z+AYrRh9f8TYyqChKfeyNm3lOe0F75AwRHTTaxD imnyang@mizuki"
   ];
 
+  environment.systemPackages = with pkgs; [
+    gtk3
+    gtk4
+  ];
+
+  programs.nix-ld = {
+    enable = true;
+    libraries = with pkgs; [
+      gtk3
+      gtk4
+      glib
+      cairo
+      pango
+      gdk-pixbuf
+      atk
+    ];
+  };
+
   system.stateVersion = "26.05";
 }
diff --git a/hosts/server/natsu/configuration.nix b/hosts/server/natsu/configuration.nix
index 6e5f76b..d113f49 100644
--- a/hosts/server/natsu/configuration.nix
+++ b/hosts/server/natsu/configuration.nix
@@ -75,6 +75,7 @@
     22
     80
     443
+    12345
   ];
 
   networking.hostName = "natsu";