diff --git a/docs/readme.txt b/docs/readme.txt
index 21fec6f19..a73442ab0 100644
--- a/docs/readme.txt
+++ b/docs/readme.txt
@@ -79,6 +79,7 @@ NVIDIA GPUs require "NVIDIA Driver" (440.64 or later) and "CUDA Toolkit" (9.0 or
 - md5($salt.sha1($salt.$pass))
 - md5($salt.utf16le($pass))
 - md5(md5($pass))
+- md5(md5(md5($pass)))
 - md5(md5($pass).md5($salt))
 - md5(sha1($pass))
 - md5(sha1($pass).md5($pass).sha1($pass))