footrest.gemspec in footrest-0.3.1 vs footrest.gemspec in footrest-0.4.1

@@ -21,11 +21,15 @@
 
   gem.add_development_dependency "rake"
   gem.add_development_dependency "bundler", ">= 1.0.0"
   gem.add_development_dependency "rspec", "~> 2.6"
   gem.add_development_dependency "webmock"
-  gem.add_development_dependency "debugger"
   gem.add_development_dependency "pry"
+  if RUBY_VERSION < '2.0'
+    gem.add_development_dependency "debugger"
+  else
+    gem.add_development_dependency "byebug"
+  end
 
   gem.add_dependency "faraday", "~> 0.9.0"
   gem.add_dependency "activesupport", ">= 3.0.0"
 
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