carte.gemspec in carte-server-0.0.20 vs carte.gemspec in carte-server-0.0.21

@@ -1,12 +1,12 @@
 # coding: utf-8
 lib = File.expand_path('../lib', __FILE__)
 $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
-require 'carte/server/version'
+require 'json'
 
 Gem::Specification.new do |spec|
   spec.name          = "carte-server"
-  spec.version       = Carte::Server::VERSION
+  spec.version       = JSON.parse(File.read("./package.json"))['version']
   spec.authors       = ["tily"]
   spec.email         = ["[e-mail]"]
   spec.summary       = %q{something like dictionary, wiki, or information card}
   spec.description   = %q{something like dictionary, wiki, or information card}
   spec.homepage      = ""