diff --git a/Gemfile b/Gemfile
index 7b4ea59..74f8e64 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,5 +1,15 @@
-source "https://rubygems.org"
+source 'https://rubygems.org'
 
 gemspec
 
-gem "pry"
\ No newline at end of file
+group :development do
+	gem 'pry'
+end
+
+group :test do
+	gem 'benchmark-ips'
+	gem 'ruby-prof', platforms: :mri
+	
+	gem 'simplecov'
+	gem 'coveralls', require: false
+end