Gemfile in string_tools-0.7.0 vs Gemfile in string_tools-0.8.0

@@ -2,12 +2,9 @@
 
 # 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