gistfile1.diff

diff --git a/lib/active_record/mass_assignment_security/associations.rb b/lib/active_record/mass_assignment_security/associations.rb
index ade4d3a..c9cb0b8 100644
--- a/lib/active_record/mass_assignment_security/associations.rb
+++ b/lib/active_record/mass_assignment_security/associations.rb
@@ -16,7 +16,7 @@ module ActiveRecord
         if attributes.is_a?(Array)
           attributes.collect { |attr| build(attr, options, &block) }
         else
-          add_to_target(build_record(attributes, options)) do |record|
+          add_to_target(build_record(attributes, options.merge(without_protection: true))) do |record|
             yield(record) if block_given?
           end
         end