diff --git a/README.md b/README.md
index 46e00ae..f98ddad 100644
--- a/README.md
+++ b/README.md
@@ -24,8 +24,14 @@ Data Structure and Algorithms
 |   |
 |   ├── 003_Tree_Recursion            
 |   |   └── main.c
-|   |         
-│   └── README.md                
+|   |
+|   ├──004_Indirect_Recursion
+|   |   └── main.c
+|   |
+|   ├──005_Nested_Recursion
+|   |   └── main.c
+|   |
+│   └── README.md  
 │
 ├── .gitignore              
 │
@@ -35,5 +41,6 @@ Data Structure and Algorithms
 |
 ├── LICENSE
 │
-└── README.md                            
-```
+└── README.md   
+│
+└──_config.yml