Weak cryptographic standards removed
Earlier today we permanently removed support for the following weak cryptographic standards on github.com and api.github.com: TLSv1/TLSv1.1: This applies to all HTTPS connections, including web, API, and Git connections to…

Earlier today we permanently removed support for the following weak cryptographic standards on github.com and api.github.com:
TLSv1
/TLSv1.1
: This applies to all HTTPS connections, including web, API, and Git connections to https://github.com and https://api.github.com.diffie-hellman-group1-sha1
: This applies to all SSH connections to github.comdiffie-hellman-group14-sha1
: This applies to all SSH connections to github.com
This change was originally announced last year, with the final timeline for the removal posted three weeks ago. If you run into any issues or have any questions, please don’t hesitate to let us know.
Written by
Related posts

GitHub Availability Report: August 2025
In August, we experienced three incidents that resulted in degraded performance across GitHub services.

Your guide to GitHub Universe 2025: The schedule just launched!
Create your own agenda of favorites, sign up for one-on-on mentoring sessions, and register if you haven’t already. We’ll see you there!

Explore the best of GitHub Universe: 9 spaces built to spark creativity, connection, and joy
See what’s happening at Universe 2025, from experimental dev tools and career coaching to community-powered spaces. Save $400 on your pass with Early Bird pricing.