diff --git a/DIRECTORY.md b/DIRECTORY.md
index 7ebc5505d..898e78826 100644
--- a/DIRECTORY.md
+++ b/DIRECTORY.md
@@ -162,6 +162,7 @@
   * [Countingsortstring](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/sorting/CountingSortString.cpp)
   * [Heap Sort](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/sorting/heap_sort.cpp)
   * [Insertion Sort](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/sorting/Insertion%20Sort.cpp)
+  * [Library Sort](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/sorting/library_sort.cpp)
   * [Merge Sort](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/sorting/Merge%20Sort.cpp)
   * [Numericstringsort](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/sorting/NumericStringSort.cpp)
   * [Oddeven Sort](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/sorting/OddEven%20Sort.cpp)