Gemfile in ransack-3.2.1 vs Gemfile in ransack-4.0.0

@@ -12,42 +12,42 @@
                   rails.gsub(/^v/, '')
                 else
                   rails
                 end
 
-gem 'faker', '~> 2.0'
-gem 'sqlite3', '~> 1.4.1'
-gem 'pg', '~> 1.0'
-gem 'pry', '~> 0.12.2'
+gem 'faker'
+gem 'sqlite3'
+gem 'pg'
+gem 'pry'
 gem 'byebug'
 
 case rails
 when /\// # A path
   gem 'activesupport', path: "#{rails}/activesupport"
   gem 'activemodel', path: "#{rails}/activemodel"
   gem 'activerecord', path: "#{rails}/activerecord", require: false
   gem 'actionpack', path: "#{rails}/actionpack"
   gem 'actionview', path: "#{rails}/actionview"
 when /^v/ # A tagged version
-  git 'https://github.com/rails/rails.git', :tag => rails do
+  git 'https://github.com/rails/rails.git', tag: rails do
     gem 'activesupport'
     gem 'activemodel'
     gem 'activerecord', require: false
     gem 'actionpack'
   end
 else
-  git 'https://github.com/rails/rails.git', :branch => rails do
+  git 'https://github.com/rails/rails.git', branch: rails do
     gem 'activesupport'
     gem 'activemodel'
     gem 'activerecord', require: false
     gem 'actionpack'
   end
 end
-gem 'mysql2', '~> 0.5.2'
+gem 'mysql2'
 
 group :test do
   gem 'machinist', '~> 1.0.6'
-  gem 'rspec', '~> 3'
-  gem 'simplecov', :require => false
+  gem 'rspec'
+  gem 'simplecov', require: false
 end
 
 gem 'rubocop', require: false