diff --git a/official-documentation-samples/rails/README.md b/official-documentation-samples/rails/README.md
index eaa0bd0..647995a 100644
--- a/official-documentation-samples/rails/README.md
+++ b/official-documentation-samples/rails/README.md
@@ -212,6 +212,14 @@ $ sudo chown -R $USER:$USER .
 If you are running Docker on Mac or Windows, you should already have ownership
 of all files, including those generated by `rails new`.
 
+This process added a lof of gems to your gemfile. One of them can be removed,
+as we will sidestep it:
+
+Remove:
+```ruby
+gem "webdrivers"
+```
+
 Now that you’ve got a new Gemfile, you need to build the image again. (This, and
 changes to the `Gemfile` or the Dockerfile, should be the only times you’ll need
 to rebuild.)