diff --git a/DIRECTORY.md b/DIRECTORY.md
index 82594ba6..52b97280 100644
--- a/DIRECTORY.md
+++ b/DIRECTORY.md
@@ -51,6 +51,9 @@
     * [Kruskal](https://github.com/TheAlgorithms/C/blob/master/data_structures/graphs/kruskal.c)
     * [Strongly Connected Components](https://github.com/TheAlgorithms/C/blob/master/data_structures/graphs/strongly_connected_components.c)
     * [Topologicalsort](https://github.com/TheAlgorithms/C/blob/master/data_structures/graphs/topologicalSort.c)
+  * Hash Set
+    * [Hash Set](https://github.com/TheAlgorithms/C/blob/master/data_structures/hash_set/hash_set.c)
+    * [Main](https://github.com/TheAlgorithms/C/blob/master/data_structures/hash_set/main.c)
   * Heap
     * [Max Heap](https://github.com/TheAlgorithms/C/blob/master/data_structures/heap/max_heap.c)
     * [Min Heap](https://github.com/TheAlgorithms/C/blob/master/data_structures/heap/min_heap.c)