diff --git a/modules/system/transmission.nix b/modules/system/transmission.nix
index 857a697..9f9b039 100644
--- a/modules/system/transmission.nix
+++ b/modules/system/transmission.nix
@@ -1,7 +1,9 @@
 { config, ... }: {
+  networking.firewall.allowedTCPPorts = [ 9091 ];
   services.transmission = {
     enable = true;
     downloadDirPermissions = "775";
+    openFirewall = true;
     settings = {
       alt-speed-down = 512;
       alt-speed-enabled = true;