diff --git a/lessons/3-NeuralNetworks/03-Perceptron/lab/PerceptronMultiClass.ipynb b/lessons/3-NeuralNetworks/03-Perceptron/lab/PerceptronMultiClass.ipynb
index 89d11985..42aeba47 100644
--- a/lessons/3-NeuralNetworks/03-Perceptron/lab/PerceptronMultiClass.ipynb
+++ b/lessons/3-NeuralNetworks/03-Perceptron/lab/PerceptronMultiClass.ipynb
@@ -131,7 +131,7 @@
    "outputs": [],
    "source": [
     "!rm *.pkl\n",
-    "!wget https://raw.githubusercontent.com/microsoft/AI-For-Beginners/main/data/mnist.pkl.gz\n",
+    "https://github.com/mnielsen/neural-networks-and-deep-learning/blob/master/data/mnist.pkl.gz",
     "!gzip -d mnist.pkl.gz"
    ]
   },