diff --git a/lib/alchemy/engine.rb b/lib/alchemy/engine.rb
index 644c8f8c11..2148172038 100644
--- a/lib/alchemy/engine.rb
+++ b/lib/alchemy/engine.rb
@@ -25,7 +25,7 @@ class Engine < Rails::Engine
     end
 
     initializer 'alchemy.picture_request_security' do |config|
-      config.middleware.insert_after ActionDispatch::Static, Alchemy::Middleware::PictureRequestSecurity
+      config.middleware.use Alchemy::Middleware::PictureRequestSecurity
     end
 
     initializer 'alchemy.flash_cookie' do |config|