diff --git a/guides/source/4_0_release_notes.md b/guides/source/4_0_release_notes.md
index 002e1da5af..2242b2699f 100644
--- a/guides/source/4_0_release_notes.md
+++ b/guides/source/4_0_release_notes.md
@@ -85,7 +85,7 @@ Please refer to the [Changelog](https://github.com/rails/rails/blob/master/railt
 
 *   New test locations `test/models`, `test/helpers`, `test/controllers`, and `test/mailers`. Corresponding rake tasks added as well. ([Pull Request](https://github.com/rails/rails/pull/7878))
 
-* Your app's executables now live in the `bin/` dir. Run `rake update:bin` to get `bin/bundle`, `bin/rails`, and `bin/rake`.
+* Your app's executables now live in the `bin/` dir. Run `rake rails:update:bin` to get `bin/bundle`, `bin/rails`, and `bin/rake`.
 
 * Threadsafe on by default