Gemfile in string_tools-0.6.1 vs Gemfile in string_tools-0.7.0

@@ -1,5 +1,13 @@
 source 'https://rubygems.org'
 
 # Specify your gem's dependencies in string_tools.gemspec
 gemspec
 
+if RUBY_VERSION < '2'
+  gem 'activerecord', '< 5.0'
+  gem 'actionpack', '< 5.0'
+  gem 'activesupport', '< 5.0'
+  gem 'pry-debugger'
+else
+  gem 'pry-byebug'
+end