diff --git a/fb_graph-mock.gemspec b/fb_graph-mock.gemspec
index 48ca80e..05f72c7 100644
--- a/fb_graph-mock.gemspec
+++ b/fb_graph-mock.gemspec
@@ -3,6 +3,7 @@ Gem::Specification.new do |gem|
   gem.version       = File.read("VERSION").delete("\n\r")
   gem.authors       = ["nov matake"]
   gem.email         = ["nov@matake.jp"]
+  gem.licenses      = ["MIT"]
   gem.description   = %q{FB Graph API mocking}
   gem.summary       = %q{Let's share current FB Graph API response format for our FB Graph API related specs!}
   gem.homepage      = "http://github.com/nov/fb_graph-mock"
@@ -15,4 +16,4 @@ Gem::Specification.new do |gem|
   gem.add_runtime_dependency "rspec", "< 3"
   gem.add_runtime_dependency "webmock", "<= 1.20.2"
   gem.add_development_dependency "simplecov"
-end
\ No newline at end of file
+end