diff --git a/gemfiles/active_record_30.gemfile b/gemfiles/active_record_30.gemfile
index d9146ff..776694a 100644
--- a/gemfiles/active_record_30.gemfile
+++ b/gemfiles/active_record_30.gemfile
@@ -10,7 +10,7 @@ gem 'capybara', '< 2.1'
 gem 'rubyzip', '< 1'
 gem 'mime-types', '< 2'
 
-platforms :ruby, :rbx do
+platforms :ruby do
   if RUBY_VERSION > "2.1.0"
     gem 'sqlite3'
   else