diff --git a/Gemfile b/Gemfile
index 8669d0f3..c66abe3f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,6 +3,10 @@ source 'https://rubygems.org'
 # Specify your gem's dependencies in hamlit.gemspec
 gemspec
 
+if Gem::Version.new(RUBY_VERSION) < Gem::Version.new('2.2.2')
+  gem 'rack', '< 2'
+end
+
 gem 'benchmark-ips', '2.3.0'
 gem 'minitest-line'
 gem 'pry-byebug'