diff --git a/devise.gemspec b/devise.gemspec
index 5ac2862d..30f0bb18 100644
--- a/devise.gemspec
+++ b/devise.gemspec
@@ -6,7 +6,7 @@ Gem::Specification.new do |s|
   s.name        = "devise"
   s.version     = Devise::VERSION.dup
   s.platform    = Gem::Platform::RUBY
-  s.license     = "MIT"
+  s.licenses    = ["MIT"]
   s.summary     = "Flexible authentication solution for Rails with Warden"
   s.email       = "contact@plataformatec.com.br"
   s.homepage    = "http://github.com/plataformatec/devise"