Disabling tls 1.1 cockpit in centos 7

[Erick Perez - Quadrian Enterprises]

Hi,
In centos 7 with cockpit 195.1 how do I disable the use of tls 1.1?

I have tried in :
/usr/lib/systemd/system/

Cockpit.service
[Service]
Environment=G_TLS_GNUTLS_PRIORITY=-VERS-ALL:+VERS-TLS1.2

And I also created the file
/etc/systemd/system/cockpit.service.d/ssl.conf

With same settings, restarted the service with
Systemctl restart cockpit

But if I do
Openssl s_client -connect  localhost:9090 -tls1_1
I get proper response (a certificate)

Suggestions?

Thanks.