diff --git a/Gemfile b/Gemfile
old mode 100755
new mode 100644
index 5f69527..7fcf93b
--- a/Gemfile
+++ b/Gemfile
@@ -3,16 +3,16 @@ source 'http://rubygems.org'
 ruby '2.1.2'
  
 gem 'tilt', '~> 1.4.1'
-gem "sinatra"
+gem "sinatra", ">= 2.0.0"
 gem "rack-flash3"
 gem "haml"
 gem "json"
 gem "rspec"
-gem "rack-test"
+gem "rack-test", ">= 0.6.3"
 gem "rake"
 gem "coffee-script"
 gem "therubyracer"
-gem "capybara"
+gem "capybara", ">= 2.4.4"
 gem "cucumber"
 gem "nokogiri"
 gem "zip"