createsend.gemspec in createsend-5.1.1 vs createsend.gemspec in createsend-6.0.0

@@ -5,10 +5,10 @@
 
 Gem::Specification.new do |s|
   s.add_runtime_dependency 'json', '>= 1.0'
   s.add_runtime_dependency 'hashie', '~> 3.0'
   s.add_runtime_dependency 'httparty', '~> 0.14'
-  s.add_development_dependency 'rake', '~> 10.0'
+  s.add_development_dependency 'rake', '~> 12.3.3'
   s.add_development_dependency 'fakeweb', '~> 1.3'
   s.add_development_dependency 'jnunemaker-matchy', '~> 0.4'
   s.add_development_dependency 'shoulda-context', '~> 1.2'
   s.add_development_dependency 'simplecov', '~> 0'
   s.add_development_dependency 'coveralls', '~> 0'