diff --git a/test/tests/ruby-bundler/Gemfile b/test/tests/ruby-bundler/Gemfile
index 99a84b494..ee5fb075a 100644
--- a/test/tests/ruby-bundler/Gemfile
+++ b/test/tests/ruby-bundler/Gemfile
@@ -1,4 +1,4 @@
 source 'https://rubygems.org'
 gem 'nokogiri'
-gem 'rack', '~>1.1'
+gem 'rack', '~>2.2.3.1'
 gem 'rspec', :require => 'spec'