diff --git a/nixbld-etc-nixos/configuration.nix b/nixbld-etc-nixos/configuration.nix
index ad4acbe6..a7180bb1 100644
--- a/nixbld-etc-nixos/configuration.nix
+++ b/nixbld-etc-nixos/configuration.nix
@@ -652,6 +652,7 @@ in
     enable = true;
     hostName = "call.m-labs.hk";
   };
+  services.jitsi-videobridge.openFirewall = true;
 
   mailserver = {
     enable = true;