diff --git a/DIRECTORY.md b/DIRECTORY.md
index 8290405c9..4d412b9c3 100644
--- a/DIRECTORY.md
+++ b/DIRECTORY.md
@@ -153,6 +153,7 @@
   * [Factorial](https://github.com/TheAlgorithms/Javascript/blob/master/Maths/Factorial.js)
   * [Factors](https://github.com/TheAlgorithms/Javascript/blob/master/Maths/Factors.js)
   * [FareyApproximation](https://github.com/TheAlgorithms/Javascript/blob/master/Maths/FareyApproximation.js)
+  * [FermatPrimalityTest](https://github.com/TheAlgorithms/Javascript/blob/master/Maths/FermatPrimalityTest.js)
   * [Fibonacci](https://github.com/TheAlgorithms/Javascript/blob/master/Maths/Fibonacci.js)
   * [FindHcf](https://github.com/TheAlgorithms/Javascript/blob/master/Maths/FindHcf.js)
   * [FindLcm](https://github.com/TheAlgorithms/Javascript/blob/master/Maths/FindLcm.js)