Gemfile in yao-0.11.3 vs Gemfile in yao-0.12.0

@@ -4,10 +4,10 @@
 gemspec
 
 group :development do
   gem 'rubocop'
   gem "bundler", ">= 1.10"
-  gem "rake", "~> 10.0"
+  gem "rake", "~> 13.0"
   gem "test-unit", ">= 3"
   gem "test-unit-rr"
   gem "power_assert"
   gem "pry"
   gem "webmock"