diff --git a/systems/x86_64-linux/sgx/wyoming.nix b/systems/x86_64-linux/sgx/wyoming.nix
index e379238..30e0f37 100644
--- a/systems/x86_64-linux/sgx/wyoming.nix
+++ b/systems/x86_64-linux/sgx/wyoming.nix
@@ -25,5 +25,6 @@
   networking.firewall.allowedTCPPorts = [
     10200
     10300
+    10400
   ];
 }