diff --git a/README.md b/README.md
index b63cffde..906c72cd 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ You can submit your suggestions here on GitHub [(Issues)](https://github.com/pri
 
 1. Install the latest stable version of [Ruby](https://www.ruby-lang.org/en/downloads/).
 1. Install [Bundler](https://bundler.io/) v2.0.1:
-	* `gem install bundler`
+	* `gem install bundler -v 2.0.1`
 1. Install the required dependencies:
 	* `bundle install`
 1. Build the website (the output can be found in the `_site` directory):