diff --git a/CHANGELOG.md b/CHANGELOG.md
index 477a690e..5dd15efe 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,8 @@ Airbrake Ruby Changelog
 * **IMPORTANT:** Deprecated `notifier_name` argument for all public API methods
   such as `Airbrake.notify('oops', {}, :my_notifier)`
   ([#168](https://github.com/airbrake/airbrake/pull/168))
+* `root_directory` is now defaulted to `Bundler.root` or current working
+  directory ([#171](https://github.com/airbrake/airbrake-ruby/pull/171))
 
 ### [v1.7.1][v1.7.1] (February 3, 2017)