diff --git a/actionpack/lib/action_dispatch/middleware/cookies.rb b/actionpack/lib/action_dispatch/middleware/cookies.rb
index 25f1db8228a0e4f4de306154e5d8d18a2f204a1c..0c717c850371914735de9d4a7eb73114bf3d98b1 100644
--- a/actionpack/lib/action_dispatch/middleware/cookies.rb
+++ b/actionpack/lib/action_dispatch/middleware/cookies.rb
@@ -273,10 +273,6 @@ def []=(key, options)
         @parent_jar[key] = options
       end
 
-      def signed
-        @signed ||= SignedCookieJar.new(self, @secret)
-      end
-
       def method_missing(method, *arguments, &block)
         @parent_jar.send(method, *arguments, &block)
       end