timed_lru.gemspec in timed_lru-0.3.2 vs timed_lru.gemspec in timed_lru-0.4.0

@@ -1,22 +1,21 @@
 Gem::Specification.new do |s|
-  s.required_ruby_version = '>= 2.2.0'
+  s.required_ruby_version = '>= 2.4.0'
 
   s.name        = File.basename(__FILE__, '.gemspec')
-  s.summary     = "Timed LRU"
-  s.description = "Thread-safe LRU implementation with (optional) TTL and constant time operations"
-  s.version     = "0.3.2"
+  s.summary     = 'Timed LRU'
+  s.description = 'Thread-safe LRU implementation with (optional) TTL and constant time operations'
+  s.version     = '0.4.0'
 
-  s.authors     = ["Black Square Media"]
-  s.email       = "[e-mail]"
-  s.homepage    = "https://github.com/bsm/timed_lru"
+  s.authors     = ['Black Square Media']
+  s.email       = '[e-mail]'
+  s.homepage    = 'https://github.com/bsm/timed_lru'
 
   s.require_path = 'lib'
   s.files        = `git ls-files`.split("\n")
   s.test_files   = `git ls-files -- {test,spec,features}/*`.split("\n")
 
-  s.add_development_dependency "rake"
-  s.add_development_dependency "bundler"
-  s.add_development_dependency "rspec"
-  s.add_development_dependency "yard"
-  s.add_development_dependency "redcarpet"
+  s.add_development_dependency 'bundler'
+  s.add_development_dependency 'rake'
+  s.add_development_dependency 'rspec'
+  s.add_development_dependency 'rubocop'
 end