CHANGELOG.md in timber-2.1.10 vs CHANGELOG.md in timber-2.2.0

@@ -1,5 +1,20 @@
 # Changelog
 
-Please see [https://github.com/timberio/timber-ruby/releases](https://github.com/timberio/timber-ruby/releases) for library specific changes.
+All notable changes to this project will be documented in this file.
 
-For all Timber changes see [https://timber.io/changelog](https://timber.io/changelog).
\ No newline at end of file
+The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
+and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [2.2.0] - 2017-09-13
+### Changed
+
+  - The default HTTP log device queue type was switched to a
+    `Timber::LogDevices::HTTP::FlushableDroppingSizedQueue` instead of a `::SizedQueue`. In the
+    event of extremely high volume logging, and delivery cannot keep up, Timber will drop messages
+    instead of applying back pressure.
+
+
+[Unreleased]: https://github.com/timberio/timber-ruby/compare/v2.2.0...HEAD
+[2.2.0]: https://github.com/timberio/timber-ruby/compare/v2.1.10...v2.2.0