features/support/env.rb in citeproc-ruby-1.0.5 vs features/support/env.rb in citeproc-ruby-1.0.6

@@ -10,11 +10,13 @@
   when RUBY_PLATFORM < 'java'
     require 'debug'
     Debugger.start
   when defined?(RUBY_ENGINE) && RUBY_ENGINE == 'rbx'
     require 'rubinius/debugger'
-  else
+  when RUBY_VERSION < '2.0'
     require 'debugger'
+  else
+    require 'byebug'
   end
 rescue LoadError
   # ignore
 end