diff --git a/Changelog.md b/Changelog.md
index 108065f0..3b30c143 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,3 +1,7 @@
+# v0.2.16 2013-01-20
+
+* [fixed] Handle Rubinius::AST::NthRef as noop
+
 # v0.2.15 2013-01-10
 
 * [change] Do not mutate super to super() anymore. This needs a context check in future.
diff --git a/Gemfile b/Gemfile
index 9e11c44a..af2325d6 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,5 +2,7 @@ source 'https://rubygems.org'
 
 gemspec
 
+gem 'mbj-inflector', :git => 'https://github.com/mbj/inflector.git'
+
 gem 'devtools', :git => 'https://github.com/datamapper/devtools.git'
 eval(File.read(File.join(File.dirname(__FILE__),'Gemfile.devtools')))
diff --git a/Gemfile.devtools b/Gemfile.devtools
index 0498ec55..16f7a10c 100644
--- a/Gemfile.devtools
+++ b/Gemfile.devtools
@@ -18,7 +18,10 @@ group :guard do
   # file system change event handling
   gem 'rb-fchange', '~> 0.0.6', :require => false
   gem 'rb-fsevent', '~> 0.9.3', :require => false
-  gem 'rb-inotify', '~> 0.8.8', :require => false, :git => 'https://github.com/nex3/rb-inotify'
+  gem 'rb-inotify', '~> 0.9.0', :require => false
+
+  # Remove this one https://github.com/guard/listen/pull/78 is released
+  gem 'listen', '~> 0.7.2', :git => 'https://github.com/guard/listen'
 
   # notification handling
   gem 'libnotify',               '~> 0.8.0', :require => false
@@ -27,12 +30,12 @@ group :guard do
 end
 
 group :metrics do
-  gem 'backports', '~> 2.6.5'
+  gem 'backports', '~> 2.7.0'
   gem 'flay',      '~> 1.4.3'
   gem 'flog',      '~> 2.5.3'
-  gem 'reek',      '~> 1.2.13', :git => 'https://github.com/dkubb/reek.git', :branch => 'fix-redundant-irresponsible-module-warnings'
+  gem 'reek',      '~> 1.2.13', :git => 'https://github.com/troessner/reek.git', :ref => 'ef77fcecaa21c9ebcbe4d9a79d41b0e70196bf18'
   gem 'roodi',     '~> 2.1.0'
-  gem 'yardstick', '~> 0.8.0'
+  gem 'yardstick', '~> 0.9.0'
 
   platforms :ruby_18, :ruby_19 do
     # this indirectly depends on ffi which does not build on ruby-head
diff --git a/lib/mutant/mutator/node/noop.rb b/lib/mutant/mutator/node/noop.rb
index 7e125887..9944abc4 100644
--- a/lib/mutant/mutator/node/noop.rb
+++ b/lib/mutant/mutator/node/noop.rb
@@ -40,6 +40,7 @@ module Mutant
           OpAssignOr19
           BlockPass19
           OpAssign1
+          NthRef
           OpAssign2
           SplatValue
           ConstantAccess
diff --git a/mutant.gemspec b/mutant.gemspec
index 517f03f0..9fdc0fd9 100644
--- a/mutant.gemspec
+++ b/mutant.gemspec
@@ -2,7 +2,7 @@
 
 Gem::Specification.new do |gem|
   gem.name        = 'mutant'
-  gem.version     = '0.2.15'
+  gem.version     = '0.2.16'
   gem.authors     = [ 'Markus Schirp' ]
   gem.email       = [ 'mbj@seonic.net' ]
   gem.description = 'Mutation testing for ruby'
@@ -18,8 +18,8 @@ Gem::Specification.new do |gem|
   gem.add_runtime_dependency('to_source',           '~> 0.2.14')
   gem.add_runtime_dependency('ice_nine',            '~> 0.6.0')
   gem.add_runtime_dependency('descendants_tracker', '~> 0.0.1')
-  gem.add_runtime_dependency('backports',           '~> 2.6')
-  gem.add_runtime_dependency('adamantium',          '~> 0.0.4')
+  gem.add_runtime_dependency('backports',           '~> 2.7.0')
+  gem.add_runtime_dependency('adamantium',          '~> 0.0.5')
   gem.add_runtime_dependency('mbj-inflector',       '~> 0.0.1')
   gem.add_runtime_dependency('equalizer',           '~> 0.0.1')
   gem.add_runtime_dependency('abstract_type',       '~> 0.0.2')