closure_tree.gemspec in closure_tree-6.0.0 vs closure_tree.gemspec in closure_tree-6.1.0

@@ -12,20 +12,20 @@
   gem.description = gem.summary
   gem.license     = 'MIT'
 
   gem.files       = `git ls-files`.split($INPUT_RECORD_SEPARATOR)
   gem.test_files  = gem.files.grep(%r{^spec/})
-  gem.required_ruby_version = '>= 2.1.0'
+  gem.required_ruby_version = '>= 2.0.0'
 
   gem.add_runtime_dependency 'activerecord', '>= 4.1.0'
   gem.add_runtime_dependency 'with_advisory_lock', '>= 3.0.0'
 
   gem.add_development_dependency 'rspec-instafail'
-  gem.add_development_dependency 'rspec-rails', '~> 3.2.3'
+  gem.add_development_dependency 'rspec-rails'
   gem.add_development_dependency 'database_cleaner'
   gem.add_development_dependency 'appraisal'
   gem.add_development_dependency 'timecop'
   gem.add_development_dependency 'parallel'
-  gem.add_development_dependency 'ammeter', '1.1.2' # See https://github.com/mceachen/closure_tree/issues/181
+  # gem.add_development_dependency 'ammeter', '1.1.2' # See https://github.com/mceachen/closure_tree/issues/181
   # gem.add_development_dependency 'byebug'
   # gem.add_development_dependency 'ruby-prof' # <- don't need this normally.
 end