diff --git a/nixosConfigurations/hetzner-vpn2/headscale.nix b/nixosConfigurations/hetzner-vpn2/headscale.nix
index de87c96..7acad6c 100644
--- a/nixosConfigurations/hetzner-vpn2/headscale.nix
+++ b/nixosConfigurations/hetzner-vpn2/headscale.nix
@@ -18,6 +18,7 @@ in
         derp = {
           server = {
             enabled = true;
+            stun_listen_addr = "0.0.0.0";
             ipv4 = "78.46.242.90";
             ipv6 = "2a01:4f8:c013:65dd::1";
           };