Mongoid: 5.1.5 release notes:
https://github.com/mongodb/mongoid/releases/tag/v5.1.5
Mongoid 6.0.1 release notes:
https://github.com/mongodb/mongoid/releases/tag/v6.0.1
Origin 2.2.1 release notes:
https://github.com/mongoid/origin/releases/tag/v2.2.1
Each can be install from RubyGems:
> gem install mongoid -v '5.1.5'
> gem install mongoid -v '6.0.1'
> gem install origin -v '2.2.1'
Please report any issues in our Jira project for Mongoid: https://jira.mongodb.org/browse/MONGOID
Thanks
The MongoDB Ruby team