diff --git a/Gemfile b/Gemfile
index f3276aa4..39e6cb41 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,8 +4,6 @@ source 'https://rubygems.org'
 
 gem 'mutant', path: '.'
 
-gem 'morpher', git: 'https://github.com/mbj/morpher.git'
-
 gemspec name: 'mutant'
 
 gem 'devtools', git: 'https://github.com/rom-rb/devtools.git'
diff --git a/mutant.gemspec b/mutant.gemspec
index 12dbe85a..19a54958 100644
--- a/mutant.gemspec
+++ b/mutant.gemspec
@@ -24,6 +24,7 @@ Gem::Specification.new do |gem|
   gem.required_ruby_version = '>= 1.9.3'
 
   gem.add_runtime_dependency('parser',              '~> 2.1.4')
+  gem.add_runtime_dependency('morpher',             '~> 0.0.1')
   gem.add_runtime_dependency('procto',              '~> 0.0.2')
   gem.add_runtime_dependency('abstract_type',       '~> 0.0.7')
   gem.add_runtime_dependency('unparser',            '~> 0.1.8')