diff --git a/nixos.nix b/nixos.nix
index b7143fc..4426c76 100644
--- a/nixos.nix
+++ b/nixos.nix
@@ -127,6 +127,7 @@ in
     ];
 
     allowedUDPPorts = [
+      24454 # Minecraft Simple Voice Chat
       2626 # Dolphin emulator
       27015 # Source games
       28910 # Heretic II