Ruby on Rails v8.1.2 released!

NewsBot · 8 January 2026 22:24

Ruby on Rails v8.1.2 has been released.

Active Support
Make delegate and delegate_missing_to work in BasicObject subclasses.

Rafael Mendonça França

Fix Inflectors when using a locale that fallbacks to :en.

Said Kaldybaev

Fix ActiveSupport::TimeWithZone#as_json to consistently return UTF-8 strings.

Previously the returned string would sometime be encoded in US-ASCII, which in
some cases may be problematic.

Now the method consistently always return UTF-8 strings.

Jean Boussier

Fix TimeWithZone#xmlschema when wrapping a DateTime instance in local time.

Previously it would return an invalid time.

Dmytro Rymar

Implement LocalCache strategy on ActiveSupport::Cache::MemoryStore. The memory store
needs to respond to the same interface as other cache stores (e.g. ActiveSupport::NullStore).

Mikey Gough
Fix ActiveSupport::Inflector.humanize with international characters.
ActiveSupport::Inflector.humanize("áÉÍÓÚ")  # => "Áéíóú"
ActiveSupport::Inflector.humanize("аБВГДЕ") # => "Абвгде"
Jose Luis Duran
Active Model

No changes.

Active Record
Fix counting cached queries in ActiveRecord::RuntimeRegistry.

fatkodima

Fix merging relations with arel equality predicates with null relations.

fatkodima

Fix SQLite3 schema dump for non-autoincrement integer primary keys.

Previously, schema.rb should incorrectly restore that table with an auto incrementing
primary key.

Chris Hasiński

Fix PostgreSQL schema_search_path not being reapplied after reset! or reconnect!.

The schema_search_path configured in database.yml is now correctly
reapplied instead of falling back to PostgreSQL defaults.

Tobias Egli
Restore the ability of enum to be foats.
enum :rating, { low: 0.0, medium: 0.5, high: 1.0 },
…

Link: Release 8.1.2 · rails/rails · GitHub