How ironic. I just added https to my site and was searching for a solution to this problem. I ended up using certonly --standalone as described here and it worked like a charm: <a href="https:&#x2F;&#x2F;www.digitalocean.com&#x2F;community&#x2F;tutorials&#x2F;how-to-secure-nginx-with-let-s-encrypt-on-ubuntu-14-04" rel="nofollow">https:&#x2F;&#x2F;www.digitalocean.com&#x2F;community&#x2F;tutorials&#x2F;how-to-secu...</a>