diff --git a/DIRECTORY.md b/DIRECTORY.md
index 2328a3364..66d6b8e87 100644
--- a/DIRECTORY.md
+++ b/DIRECTORY.md
@@ -79,6 +79,7 @@
   * [Kosaraju](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/graph/kosaraju.cpp)
   * [Kruskal](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/graph/Kruskal.cpp)
   * [Lca](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/graph/lca.cpp)
+  * [Prim](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/graph/prim.cpp)
   * [Topological-Sort](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/graph/Topological-Sort.cpp)
 
 ## Greedy Algorithms