diff --git a/machines/kcnhub/servers/xpra.nix b/machines/kcnhub/servers/xpra.nix
index 73045f3..c3b9e53 100644
--- a/machines/kcnhub/servers/xpra.nix
+++ b/machines/kcnhub/servers/xpra.nix
@@ -34,7 +34,7 @@ in {
       ExecStart = ''${xpra-web} proxy :14500 --daemon=no \
                        --socket-dirs=/run/xpra --socket-permissions=666 \
                        --log-dir=/var/log --pidfile=/run/xpra/proxy.pid \
-                       --auth=pam --bind-tcp=0.0.0.0:10000'';
+                       --ws-auth=pam --auth=pam --tcp-auth=pam --bind-tcp=0.0.0.0:10000'';
       Restart = "always";
       # Security
       NoNewPrivileges = true;