Webpack-dev-server certificate expired?

Question

In my webpack.config.js file, I added https configuration:

devServer: {
    historyApiFallback: true,
    contentBase: './',
    https: true
}

Then I receive an error when I navigate to https://localhost:8080/

Your connection is not private

Attackers might be trying to steal your information from localhost (for example, passwords, messages, or credit cards). NET::ERR_CERT_AUTHORITY_INVALID
Subject: webpack
Issuer: webpack
Expires on: Dec 10, 2015
Current date: Mar 27, 2016
PEM encoded chain: -----BEGIN CERTIFICATE-----
...
-----END CERTIFICATE----

It appears webpack's certificate expired. Did I configure something incorrectly? Or have I misunderstood SSL?

I'm using

"webpack": "^1.12.9",
"webpack-dev-server": "^1.14.1"

Answer 1

EDIT:

As pointed by Markus in the comments, webpack-dev-server generates the certificate automatically since version 2.5.0.

---

OLD ANSWER:

The problem is that the self-signed certificate of webpack-dev-server expired. This has been fixed in #436.