diff --git a/nixos.nix b/nixos.nix
index 8737c9a..27b33af 100644
--- a/nixos.nix
+++ b/nixos.nix
@@ -34,6 +34,8 @@
     LC_TIME = "nl_NL.UTF-8";
   };
 
+  networking.firewall.allowedTCPPorts = [ 8000 ];
+
   services.xserver.enable = true;
 
   services.xserver.displayManager.gdm.enable = true;