CHANGELOG.md in sentry-sidekiq-4.2.0 vs CHANGELOG.md in sentry-sidekiq-4.2.1

@@ -1,6 +1,11 @@
 # Changelog
 
+## 4.2.1
+
+- Use ::Rails::Railtie for checking Rails definition [#1284](https://github.com/getsentry/sentry-ruby/pull/1284)
+  - Fixes [#1276](https://github.com/getsentry/sentry-ruby/issues/1276)
+
 ## 4.2.0
 
 ### Features
 
 - Tag queue name and jid on sidekiq events [#1258](https://github.com/getsentry/sentry-ruby/pull/1258)