diff --git a/lib/patterns.rb b/lib/patterns.rb
index <HASH>..<HASH> 100644
--- a/lib/patterns.rb
+++ b/lib/patterns.rb
@@ -17,6 +17,7 @@ module Patterns
     continuation
     coverage
     delegate
+    digest
     drb
     e2mmap
     english
digest library was still standard library on Ruby <I>