diff --git a/lib/devise_lastseenable/model.rb b/lib/devise_lastseenable/model.rb
index dcb7260..37867bb 100644
--- a/lib/devise_lastseenable/model.rb
+++ b/lib/devise_lastseenable/model.rb
@@ -4,11 +4,10 @@ module Devise
   module Models
     module Lastseenable
       def stamp!
-        if self.last_seen.to_i < (Time.now - 5.minutes).to_i
-          self.last_seen = DateTime.now
-          self.save!
+        if self.last_seen.to_i < (Time.now.utc - 5.minutes).to_i
+          update_column(:last_seen, DateTime.now)
         end
       end
     end
   end
-end
\ No newline at end of file
+end