Gemfile in msgpack_rails-0.3.0 vs Gemfile in msgpack_rails-0.4.0

@@ -1,8 +1,4 @@
 source 'https://rubygems.org'
 
 # Specify your gem's dependencies in msgpack_rails.gemspec
 gemspec
-
-gem "rake"
-gem "railties"
-gem "activemodel"