diff --git a/DIRECTORY.md b/DIRECTORY.md
index 09e589c21..74bc29d63 100644
--- a/DIRECTORY.md
+++ b/DIRECTORY.md
@@ -231,6 +231,7 @@
   * [Fenwick Tree](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/range_queries/fenwick_tree.cpp)
   * [Heavy Light Decomposition](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/range_queries/heavy_light_decomposition.cpp)
   * [Mo](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/range_queries/mo.cpp)
+  * [Persistent Segment Tree With Lazy Propagation](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/range_queries/persistent_segment_tree_with_lazy_propagation.cpp)
   * [Segtree](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/range_queries/segtree.cpp)
   * [Sparse Table](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/range_queries/sparse_table.cpp)