diff --git a/spec/test_app/config/application.rb b/spec/test_app/config/application.rb
index af0ed0959..bb6896ceb 100644
--- a/spec/test_app/config/application.rb
+++ b/spec/test_app/config/application.rb
@@ -11,6 +11,7 @@
 require "action_cable/engine"
 # require "rails/test_unit/railtie"
 require "sprockets/railtie"
+require 'dry/monads'
 
 Bundler.require(*Rails.groups)
 require "bulkrax"