diff --git a/modules/nixos/postgresql/default.nix b/modules/nixos/postgresql/default.nix
index 126632f..c3fb83a 100644
--- a/modules/nixos/postgresql/default.nix
+++ b/modules/nixos/postgresql/default.nix
@@ -47,4 +47,6 @@ in {
       EOF
     '';
   };
+
+  networking.firewall.allowedTCPPorts = [config.services.postgresql.settings.port];
 }