README.md in bagit-0.4.2 vs README.md in bagit-0.4.3

@@ -28,10 +28,10 @@
     bag.add_file("samplefile") do |io|
       io.puts "Hello Bag!"
     end
 
     # generate the manifest and tagmanifest files
-    bag.manifest!
+    bag.manifest!(algo: 'sha256')
 
 Example: validating an existing bag
 -----------------------------------
 
     bag = BagIt::Bag.new existing_base_path