diff --git a/system/gospel/configuration.nix b/system/gospel/configuration.nix
index cf5b92c..0caaff5 100644
--- a/system/gospel/configuration.nix
+++ b/system/gospel/configuration.nix
@@ -182,6 +182,9 @@
   # networking.firewall.allowedUDPPorts = [ ... ];
   # Or disable the firewall altogether.
   # networking.firewall.enable = false;
+  networking.firewall = {
+    allowedTCPPorts = [80];
+  };
 
   # Copy the NixOS configuration file and link it from the resulting system
   # (/run/current-system/configuration.nix). This is useful in case you