1 files changed, 1 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/attribute_methods/time_zone_conversion.rb b/activerecord/lib/active_record/attribute_methods/time_zone_conversion.rb
index 17cf34cdf6..c9b2edbd8c 100644
--- a/activerecord/lib/active_record/attribute_methods/time_zone_conversion.rb
+++ b/activerecord/lib/active_record/attribute_methods/time_zone_conversion.rb
@@ -43,6 +43,7 @@ module ActiveRecord
                   end
                   time = time.in_time_zone rescue nil if time
                   write_attribute(:#{attr_name}, original_time)
+                  #{attr_name}_will_change!
                   @attributes_cache["#{attr_name}"] = time
                 end
               EOV