diff --git a/app/models/current.rb b/app/models/current.rb
new file mode 100644
index 0000000..6287c17
--- /dev/null
+++ b/app/models/current.rb
@@ -0,0 +1,5 @@
+# frozen_string_literal: true
+
+class Current < ActiveSupport::CurrentAttributes
+  attribute :missing_value # Set by baseline
+end