diff --git a/Introduction to Machine Learning(CENG 499)/hw1/499Hw1ArtificialNeuralNetwork/requirements.txt b/Introduction to Machine Learning(CENG 499)/hw1/499Hw1ArtificialNeuralNetwork/requirements.txt
index 8ccd5939..0bca45a9 100644
--- a/Introduction to Machine Learning(CENG 499)/hw1/499Hw1ArtificialNeuralNetwork/requirements.txt	
+++ b/Introduction to Machine Learning(CENG 499)/hw1/499Hw1ArtificialNeuralNetwork/requirements.txt	
@@ -7,7 +7,7 @@ gridworld==0.1
 gym==0.17.1
 install==1.3.4
 numpy==1.18.2
-Pillow==8.1.1
+Pillow==9.0.0
 pip==20.2.4
 pyglet==1.5.0
 pytiled-parser==0.9.3