Gemfile in activeldap-4.0.1 vs Gemfile in activeldap-4.0.2

@@ -4,10 +4,10 @@
 
 gemspec
 
 group :test do
   gem "net-ldap"
-  platforms :mri_18, :mri_19 do
+  platforms :mri do
     gem "ruby-ldap"
   end
   platforms :jruby do
     gem "jruby-openssl"
   end