Please answer these questions before submitting your issue. Thanks!

1. What version of Go are you using (go version)?
   1.6.1
2. What operating system and processor architecture are you using (go env)?
   linux/amd64
3. What did you do?

I used golang.org/x/net/publicsuffix and it doesn't contain the last updated list

1. What did you expect to see?

An updated list

1. What did you see instead?

A list from 2016-03-01

The list is changing more than before. The trigger was LetsEncrypt but people begin to understand the security implications beside Letsencrypt.