Gemfile in mailersend-ruby-1.5.1 vs Gemfile in mailersend-ruby-1.5.2

@@ -1,4 +1,10 @@
 # frozen_string_literal: true
 
 source 'https://rubygems.org'
 gemspec
+
+group :development do
+  gem 'bundler', '~> 2.4.10'
+  gem 'rake', '~> 13.0.6'
+  gem 'rubocop', '~> 1.52.1'
+end