![](https://github.blog/wp-content/uploads/2022/11/Group-4-1.png?resize=800%2C425)
How GitHub converts previously encrypted and unencrypted columns to ActiveRecord encrypted columns
This post is the second part in a series about ActiveRecord::Encryption that shows how GitHub upgrades previously encrypted and unencrypted columns to ActiveRecord::Encryption.
![](https://github.blog/wp-content/uploads/2022/11/Group-4-1.png?resize=800%2C425)