diff --git a/lib/runcible/extensions/erratum.rb b/lib/runcible/extensions/erratum.rb
index 8381800d..e4dc70b5 100644
--- a/lib/runcible/extensions/erratum.rb
+++ b/lib/runcible/extensions/erratum.rb
@@ -1,3 +1,5 @@
+require 'runcible/extensions/errata'
+
 module Runcible
   module Extensions
     class Erratum < Runcible::Extensions::Errata