diff --git a/DIRECTORY.md b/DIRECTORY.md
index e5ca6d62fe45..a5a1cf31796e 100644
--- a/DIRECTORY.md
+++ b/DIRECTORY.md
@@ -349,6 +349,7 @@
   * [Djb2](https://github.com/TheAlgorithms/Python/blob/master/hashes/djb2.py)
   * [Enigma Machine](https://github.com/TheAlgorithms/Python/blob/master/hashes/enigma_machine.py)
   * [Hamming Code](https://github.com/TheAlgorithms/Python/blob/master/hashes/hamming_code.py)
+  * [Luhn](https://github.com/TheAlgorithms/Python/blob/master/hashes/luhn.py)
   * [Md5](https://github.com/TheAlgorithms/Python/blob/master/hashes/md5.py)
   * [Sdbm](https://github.com/TheAlgorithms/Python/blob/master/hashes/sdbm.py)
   * [Sha1](https://github.com/TheAlgorithms/Python/blob/master/hashes/sha1.py)