diff --git a/nixos/openssh.nix b/nixos/openssh.nix
index 651763b..4890894 100644
--- a/nixos/openssh.nix
+++ b/nixos/openssh.nix
@@ -1,3 +1,4 @@
+{ config, ... }:
 {
   services.openssh = {
     enable = true;
@@ -12,5 +13,5 @@
     };
   };
 
-  networking.firewall.allowedTCPPorts = [ 22 ];
+  networking.firewall.allowedTCPPorts = config.services.openssh.ports;
 }