TLS Upgrade Notice

As of January 12, 2016 (approximated 9:00am ET) Chargify now no longer supports TLS 1.0 or TLS 1.1 over HTTPS on the domain. Any older browsers or API clients that do not support TLS 1.2 will no longer work. This change is mandated by the PCI Security Council and affects all merchants and service providers processing or transmitting credit card data.

If you use webhooks, your non-test endpoints are also be required to support HTTPS and TLS 1.2 in order to receive webhooks from us. Any endpoints that do not support a TLS 1.2 connection will be disabled.

Why are we making this change?

The PCI Security Council sets the rules on which technologies are acceptable for use in transmitting cardholder data. They have explicitly identified TLS 1.0 as no longer being a strong form of encryption because it is vulnerable to many known attacks.

This is not an action Chargify is taking alone. EVERY website that transmits or processes credit card data will be making this change. If you or your customers are using an insecure or unsupported browser or API client, you will find that all secure websites will stop working very soon.

Previous information

The switch has been completed, but we’ve kept the old guidance here below for a period of time for posterity:

How do I know if I’m affected?

  • You or your subscriber may not be able to access the Chargify login area. Or, your Subscribers may not be able to access the Public Signup Pages and receive a TLS warning page.
  • Webhook Endpoint checks will confirm if your endpoints are ready for the switchover. If there’s a problem with us connecting to one of your endpoints, it’ll be listed here.
  • API checks are a list of recent connections you’ve made to our API that may have trouble after January 12, 2016.

Caveat: We reviewed recent connections made to your Chargify subdomains to try and help you. But there may be false-negatives or false-positives. This method is imperfect because:

  • Sometimes an API client using an older version will auto-upgrade when we remove support.
  • We ignored connections from browser-like user-agents (Firefox, Gecko, Mozilla, Chrome, AppleWebKit, Safari, etc). If your API client “fakes” a browser user-agent, it’s not included here.
  • Connections to “” (such as Chargify API v2) are not included

A comprehensive list of client library support is available here:

API Library support

If you have code that connects with the Chargify API, you must ensure that it will continue to work after January 12, 2016. Each language and library is different, but we’ve identified the popular ones that may be of concern.

These languages will need significant changes/upgrades in order to work:

  • Java 6u45 / 7u45
  • .NET before 4.5 (does not support TLS 1.2)
  • .NET 4.5 (must be have setting changed to explicitly enable TLS 1.2)
  • OpenSSL 0.9.8

Most dynamic languages such as Ruby, PHP, & Python rely on the underlying operating system’s OpenSSL version. You can check it by running openssl version. 1.0.1 in the minimum required.

We would be happy to help you ensure compatibility in any way we can. However, please keep in mind that we are not experts in every language or framework and so we aren’t able to test or fix your code for you.

Browser Support

Most browsers have supported TLS 1.2 for several years.

The following browsers DO NOT support TLS 1.2 and will no longer work.

  • Google Chrome 29
  • Firefox 26
  • Internet Explorer 10
  • Safari 8
  • iOS 4
  • Android 4

Chargify Direct

Chargify Direct, when used as a browser-side transparent redirect will not affect MOST end users with modern browsers. It will fail for customers with very old browsers that are unable to initiate a secure connection. Those customers are likely to find that all secure websites will start failing for them soon and will be forced to upgrade anyway, so the impact is expected to be minimal.

Note that Chargify V2 signups (NOT transparent redirect) must be tested to make sure they can make API calls successfully.

Shopify Merchants

If you use Chargify solely through Shopify, you do not need to take any action. We have already ensured everything will continue to work.

Further Reading & Resources

Further Reading & Resources

Language specific instructions


Chargify.NET Library

  • You should set the ProtocolType property of ChargifyConnect to the values from above (SecurityProtocolType.Tls12 for .NET 4.5+ or (SecurityProtocolType)3072 for .NET 4.0) before making any API calls.
var chargify = new ChargifyConnect("<your chargify url>", "<your api key>", "X");
    chargify.ProtocolType = SecurityProtocolType.Tls12;


Ruby uses the system openssl. OpenSSL v0.9.8 will no longer work, but later versions work without any changes required. With Ruby 1.9+ you can test the connection with this script:

require 'openssl'
require 'net/http'
http ='', 443)
http.use_ssl = true
http.verify_mode = OpenSSL::SSL::VERIFY_PEER
http.start do
  http.request_get('/') do |response|
    puts response.body

# You should expect to see:
# ConnectionOK
# => #<Net::HTTPOK 200 OK readbody=true>


You can test if the connection works with:

import urllib2

# Expected: 'ConnectionOK\n'


You can check if PHP will work with the following script:

$ch = curl_init('');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$data = curl_exec($ch);

$json = json_decode($data);
echo $json->tls_version;

$curl_info = curl_version();
echo $curl_info['ssl_version'];

You should see TLS 1.2 and OpenSSL version of at least 1.0.1