Mongo Mapper

MongoMapper 0.18.0 Release

Posted by Scott Taylor on October 25, 2026

MongoMapper 0.18.0 has been released.

This release adds GlobalID support, MongoMapper.setup_with_config_file, a YAML alias/psych config fix, a static_keys embedded-doc fix, and support for Ruby 4.0, Rails 8.1, and MongoDB 8.0.

Thanks to the many contributors!

See the changelog for full details.

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