SUPPORT.TWILIO.COM END OF LIFE NOTICE: This site,, is scheduled to go End of Life on February 27, 2024. All Twilio Support content has been migrated to, where you can continue to find helpful Support articles, API docs, and Twilio blog content, and escalate your issues to our Support team. We encourage you to update your bookmarks and begin using the new site today for all your Twilio Support needs.

Legacy Twilio Programmable Voice and Video SDKs impacted by SSL certificate deprecation

Legacy versions of some Twilio Programmable Voice and Video SDKs that you may be using in your applications may be impacted by an upcoming change to Twilio's SSL certificates. Please read on to determine whether your application is impacted and recommended steps to ensure your users are not affected.

What is Happening?

As part of an industry-wide effort, Twilio and many other vendors including Google have made plans to gradually distrust and remove dependencies on Thawte certificates. Twilio is in the process of replacing its Thawte SSL certificates with new certificates from a different provider.

Some older versions of Twilio's SDKs only trust certificates from Thawte. When we replace the current certificates, these older SDK releases will refuse to accept the new certificate, and will refuse to connect to Twilio. Newer versions of our SDKs are able to accept certificates from multiple providers and will continue to work without interruption.

When is this happening?

The affected versions of Programmable Voice and Video SDKs for iOS and Android will cease functioning on September 13, 2018 at 4 pm Pacific Time. For continuity of service, it is imperative that you update your apps to use the latest Twilio SDKs and release them to the App/Play store before that time. We encourage you to do so as soon as possible. 

What Products Are Impacted?

The following SDK releases will cease functioning at the impact date specified below.


Affected Version(s)

Upgrade To

Twilio Voice Android

2.0.0-beta5 - 2.0.0-beta29,

2.0.1 - 2.0.3


Twilio Voice iOS

2.0.0-beta9 - 2.0.0-beta12


Twilio Video Android

1.0.0-beta10 and earlier

1.3.13+ or 2.0.0-beta3+

Twilio Video iOS 1.0.0-beta9 and earlier 1.3.11+ or 2.0.0-beta3+


JavaScript SDKs, Twilio Client SDKs, Authy SDKs, and Twilio REST API helper libraries are not affected by this change.

What do I need to do now?

If your application is currently shipping with one of the impacted versions listed above, you should upgrade the affected library as soon as possible, and encourage your users to download the upgraded version.

What do I do if I need help?

Please contact our support team with any questions on this issue. Be sure to mention Thawte Certificate Deprecation so we can address your query promptly.

We apologize for any inconvenience this may cause you or your users. We are here to help you ensure minimal disruption to your customers and your business. Thank you for your understanding with and attention to this matter.

Have more questions? Submit a request
Powered by Zendesk