Ruby: Will optimistic locking work using update_all?

I am trying to implement the Optimistic Locking for Race Condition. For that, I added an extra column lock_version in the Product: Model through migration.

#Product: Model's new field:
    #  attribute_1
    #  lock_version                       :integer(4)      default(0), not null
before_validation :method_1, :if => :recalculation_required_attribute

def method_1
    ####
    ####
    if self.lock_version == Product.find(self.id).lock_version
       attributes["lock_version"] += 1
       attributes["updated_at"] = Time.now
       Product.where(:id => self.id).update_all(attributes)
       self.attributes = attributes
    end
end

Product Model has an attribute_1. If recalculation is required for attribute_1 then before_validation: method_1 will call.

I am using optimistic locking using lock_version. However, update_all will not increase the lock_version and can't self.save! because it will trigger the before_validation: method1 for infinite times.

If I do like following will optimistic locking work using update_all?

attributes["lock_version"] = 1 +1
attributes["updated_at"] = Time.now
Product.where(:id => self.id).update_all(attributes)

You can check more information on lock_version