How do I change the user agent of K-9 Mail's IMAP client on Android?

I'm trying to use k-9 mail on android to connect to my organization's IMAP server which is being run as an **outlook.office365.com** service. As I'm sure many of you know, Microsoft recently turned off *Basic Authentication* which is how I previously connected. While this no longer works, I should be able to use OAuth2 which is supported by both server and client. However, when connecting and then authenticating I then get the following error. I should note, I am able to use the OAuth2 authentication in Thunderbird on Linux. Since, IMAP is the actual protocol being used in both cases, I'm guessing that the only difference is the "User Agent" string being sent to the server in the android case. **How do I configure K-9 to use the same user agent string as I see sent from my Linux machine?**