diff --git a/contrib/machine-learning/index.md b/contrib/machine-learning/index.md
index 46100df..1e0004d 100644
--- a/contrib/machine-learning/index.md
+++ b/contrib/machine-learning/index.md
@@ -10,3 +10,4 @@
 - [PyTorch.md](pytorch.md)
 - [Types of optimizers](Types_of_optimizers.md)
 - [Logistic Regression](logistic-regression.md)
+- [Clustering](clustering.md)