diff --git a/lib/qa/engine.rb b/lib/qa/engine.rb
index 0b588ba..95d7b8c 100644
--- a/lib/qa/engine.rb
+++ b/lib/qa/engine.rb
@@ -4,5 +4,16 @@
 module Qa
   class Engine < ::Rails::Engine
     isolate_namespace Qa
+
+    config.before_configuration do
+      # see https://github.com/fxn/zeitwerk#for_gem
+      # Blacklight puts a generator into LOCAL APP lib/generators, so tell
+      # zeitwerk to ignore the whole directory? If we're using zeitwerk
+      #
+      # See: https://github.com/cbeer/engine_cart/issues/117
+      if Rails.autoloaders&.main.respond_to?(:ignore)
+        Rails.autoloaders.main.ignore(Rails.root.join('lib/generators'))
+      end
+    end
   end
 end