diff --git a/Gemfile b/Gemfile
index c69f4ddde9..71e0beb651 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,21 +1,19 @@
 source 'https://rubygems.org'
-ruby '2.3.1'
+ruby '2.4.0'
 
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
-gem 'rails', '4.2.6'
+gem 'rails', '5.0.2'
 # Use postgresql as the database for Active Record
-# gem 'pg', '~> 0.15'
+gem 'pg', '~> 0.15'
 # Use SCSS for stylesheets
 gem 'sass-rails', '~> 5.0'
 # Use Uglifier as compressor for JavaScript assets
 gem 'uglifier', '>= 1.3.0'
 # Use CoffeeScript for .coffee assets and views
-gem 'coffee-rails', '~> 4.1.0'
+gem 'coffee-rails', '~> 4.2'
 # See https://github.com/rails/execjs#readme for more supported runtimes
 # gem 'therubyracer', platforms: :ruby
 
-# Use jquery as the JavaScript library
-gem 'jquery-rails'
 # Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
 gem 'turbolinks'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder