Rock 5B stuck on Radxa build 36

I am a new user to the forum. I have been running my R5B with Radxa OS (Debian) build 36 with no issues, other than it will not update to build 37 using the normal update method due to processing errors for the dpkg. Is it important to force an update to the latest build (39) for security reasons? I really don’t want to create problems with my machine which is running fine on build 36 unless it is a security vulnerability?
Thank you for any advice,