CHANGELOG.md in react_on_rails-12.4.0.rc.0 vs CHANGELOG.md in react_on_rails-12.4.0

@@ -15,18 +15,19 @@
 ### [Unreleased]
 Changes since last non-beta release.
 
 *Please add entries here for your pull requests that are not yet released.*
 
+### [12.4.0] - 2021-09-22
 #### Added
+- ScoutAPM tracing support for server rendering [PR 1379](https://github.com/shakacode/react_on_rails/pull/1379) by [justin808](https://github.com/justin808).
 
 - Ability to stop React on Rails from modifying or creating the `assets:precompile` task. [PR 1371](https://github.com/shakacode/react_on_rails/pull/1371) by [justin808](https://github.com/justin808). Thanks to [elstgav](https://github.com/elstgav) for [the suggestion](https://github.com/shakacode/react_on_rails/issues/1368)!
 
 - Ability to stop stubbing of setTimeout, setInterval, & clearTimeout conditional by setting `ReactOnRailsPro.config.include_execjs_polyfills = false` in the React on Rails Pro configuration file. Also, added the ability to have render functions return a promise to be awaited by React on Rails Pro Node Renderer. [PR 1380](https://github.com/shakacode/react_on_rails/pull/1380) by [judahmeek](https://github.com/judahmeek)
 
 ### [12.3.0] - 2021-07-26
 #### Added
-
 - Ability to use with Turbo (@hotwired/turbo), as Turbolinks gets obsolete. [PR 1374](https://github.com/shakacode/react_on_rails/pull/1374) by [pgruener](https://github.com/pgruener) and [PR 1377](https://github.com/shakacode/react_on_rails/pull/1377) by [mdesantis](https://github.com/mdesantis).
 
   To configure turbo the following option can be set:
   `ReactOnRails.setOptions({ turbo: true })`