diff --git a/lib/mutant/zombifier.rb b/lib/mutant/zombifier.rb
index b6e5abfe..6d52364a 100644
--- a/lib/mutant/zombifier.rb
+++ b/lib/mutant/zombifier.rb
@@ -13,6 +13,7 @@ module Mutant
       set
       rspec
       diff/lcs
+      diff/lcs/hunk
       parser
       parser/all
       parser/current