diff --git a/README.md b/README.md
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--- a/README.md
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@@ -103,7 +103,7 @@ In this case, remove that server.pid file and try again. Note also that this fil
 
 ## Capybara Tests
 
-RailsGoat now includes a set of failing Capybara RSpecs, each one indicating that a separate vulnerability exists in the application. To run them, you first need to install [PhantomJS](https://github.com/jonleighton/poltergeist#installing-phantomjs), which is required by the Poltergeist Capybara driver. Upon installation, simply run the following rake task:
+RailsGoat now includes a set of failing Capybara RSpecs, each one indicating that a separate vulnerability exists in the application. To run them, you first need to install [PhantomJS](https://github.com/jonleighton/poltergeist#installing-phantomjs) (version 2.1.1 has been tested in Dev and on Travis CI), which is required by the Poltergeist Capybara driver. Upon installation, simply run the following rake task:
 
 ```
 $ rake training