diff --git a/lib/mutant.rb b/lib/mutant.rb
index 0673d8a2..5e65400d 100644
--- a/lib/mutant.rb
+++ b/lib/mutant.rb
@@ -8,7 +8,6 @@ require 'equalizer'
 require 'to_source'
 require 'ice_nine'
 require 'ice_nine/core_ext/object'
-require 'anima'
 require 'diff/lcs'
 require 'diff/lcs/hunk'
 
diff --git a/lib/mutant/runner.rb b/lib/mutant/runner.rb
index 27321bf1..5494726c 100644
--- a/lib/mutant/runner.rb
+++ b/lib/mutant/runner.rb
@@ -4,11 +4,6 @@ module Mutant
     include Adamantium::Flat, Anima
     extend MethodObject
 
-    attribute :matcher
-    attribute :killer
-    attribute :reporter
-    attribute :mutation_filter
-
     # Return killers with errors
     #
     # @return [Enumerable<Killer>]
diff --git a/mutant.gemspec b/mutant.gemspec
index 3b573923..f87596f4 100644
--- a/mutant.gemspec
+++ b/mutant.gemspec
@@ -23,6 +23,5 @@ Gem::Specification.new do |gem|
   gem.add_runtime_dependency('adamantium',          '~> 0.0.1')
   gem.add_runtime_dependency('equalizer',           '~> 0.0.1')
   gem.add_runtime_dependency('abstract_class',      '~> 0.0.1')
-  gem.add_runtime_dependency('anima',               '~> 0.0.1')
   gem.add_runtime_dependency('diff-lcs',            '~> 1.1.3')
 end