Gemfile in fastly-2.5.1 vs Gemfile in fastly-2.5.2

@@ -2,10 +2,10 @@
 
 gemspec
 
 group :development, :test do
   gem 'appraisal', '~> 2.1'
-  gem 'rake', '~> 10.3.2'
+  gem 'rake', '>= 12.3.3'
   gem 'rdoc', '~> 4.1.1'
   gem 'minitest', '~> 5.3.4'
   gem 'pry'
   gem 'rubocop', '~> 0.57.2', require: false
   gem 'webmock'