diff --git a/ml1/2_5_0_Machine_Learning.ipynb b/ml1/2_5_0_Machine_Learning.ipynb
index 46fd6e3..2b8e333 100644
--- a/ml1/2_5_0_Machine_Learning.ipynb
+++ b/ml1/2_5_0_Machine_Learning.ipynb
@@ -154,7 +154,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "* [General concepts of machine learning with scikit-learn](https://ogrisel.github.io/scikit-learn.org/sklearn-tutorial/auto_examples/tutorial/plot_ML_flow_chart.html)\n",
+    "* [Python Data Science Handbook](https://jakevdp.github.io/PythonDataScienceHandbook/index.html)\n",
     "* [A Tour of Machine Learning Algorithms](http://machinelearningmastery.com/a-tour-of-machine-learning-algorithms/)"
    ]
   },