Gemfile in yaml-write-stream-1.0.4 vs Gemfile in yaml-write-stream-2.0.0

@@ -2,10 +2,10 @@
 
 gemspec
 
 group :development, :test do
   gem 'pry', '~> 0.9.0'
-  gem 'pry-nav'
+  gem 'pry-byebug'
   gem 'rake'
 end
 
 group :test do
   gem 'rspec'