diff --git a/DIRECTORY.md b/DIRECTORY.md
index 4bce1d7b8..d9ae84a3b 100644
--- a/DIRECTORY.md
+++ b/DIRECTORY.md
@@ -93,6 +93,11 @@
 ## Math
   * [Binary Exponent](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/math/binary_exponent.cpp)
   * [Eulers Totient Function](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/math/eulers_totient_function.cpp)
+
+## Math
+  * [Extendedeuclidian](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/Math/extendedEuclidian.cpp)
+
+## Math
   * [Factorial](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/math/factorial.cpp)
   * [Fast Power](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/math/fast_power.cpp)
   * [Greatest Common Divisor](https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/math/greatest_common_divisor.cpp)