diff --git a/DIRECTORY.md b/DIRECTORY.md
index c90043aa7..5f9046cc7 100644
--- a/DIRECTORY.md
+++ b/DIRECTORY.md
@@ -264,6 +264,7 @@
   * [Test Knapsack](https://github.com/TheAlgorithms/Python/blob/master/greedy_method/test_knapsack.py)
 
 ## Hashes
+  * [Adler32](https://github.com/TheAlgorithms/Python/blob/master/hashes/adler32.py)
   * [Chaos Machine](https://github.com/TheAlgorithms/Python/blob/master/hashes/chaos_machine.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)
diff --git a/natural_language_processing b/natural_language_processing
new file mode 100644
index 000000000..b864d9e08
--- /dev/null
+++ b/natural_language_processing
@@ -0,0 +1,3 @@
+# Natural Language Processing
+
+https://en.wikipedia.org/wiki/Natural_language_processing