diff --git a/contrib/machine-learning/index.md b/contrib/machine-learning/index.md
index e56691d..a0dd999 100644
--- a/contrib/machine-learning/index.md
+++ b/contrib/machine-learning/index.md
@@ -1,16 +1,16 @@
 # List of sections
 
-- [Binomial Distribution](binomial_distribution.md)
-- [Regression in Machine Learning](Regression.md)
+- [Binomial Distribution](binomial-distribution.md)
+- [Regression in Machine Learning](regression.md)
 - [Confusion Matrix](confusion-matrix.md)
-- [Decision Tree Learning](Decision-Tree.md)
+- [Decision Tree Learning](decision-tree.md)
 - [Random Forest](random-forest.md)
 - [Support Vector Machine Algorithm](support-vector-machine.md)
-- [Artificial Neural Network from the Ground Up](ArtificialNeuralNetwork.md)
+- [Artificial Neural Network from the Ground Up](ann.md)
 - [Introduction To Convolutional Neural Networks (CNNs)](intro-to-cnn.md)
-- [TensorFlow.md](tensorFlow.md)
+- [TensorFlow.md](tensorflow.md)
 - [PyTorch.md](pytorch.md)
-- [Types of optimizers](Types_of_optimizers.md)
+- [Types of optimizers](types-of-optimizers.md)
 - [Logistic Regression](logistic-regression.md)
 - [Clustering](clustering.md)
 - [Grid Search](grid-search.md)