diff --git a/Gemfile.lock b/Gemfile.lock
index d7c9382..b2a5594 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -23,7 +23,7 @@ GIT
 PATH
   remote: .
   specs:
-    cmtool (1.0.0)
+    cmtool (2.0.0)
       ace-rails-ap
       bourbon
       email_validator
diff --git a/cmtool.gemspec b/cmtool.gemspec
index 8b1d564..dc01bc1 100644
--- a/cmtool.gemspec
+++ b/cmtool.gemspec
@@ -1,9 +1,10 @@
 # -*- encoding: utf-8 -*-
-# stub: cmtool 1.0.0 ruby lib
+$:.push File.expand_path("../lib", __FILE__)
+require 'cmtool/version'
 
 Gem::Specification.new do |s|
   s.name = "cmtool"
-  s.version = "2.0.0"
+  s.version = Cmtool::VERSION
 
   s.required_rubygems_version = Gem::Requirement.new(">= 0") if s.respond_to? :required_rubygems_version=
   s.require_paths = ["lib"]