diff --git a/index.ipynb b/index.ipynb
index 7987209..950a96b 100644
--- a/index.ipynb
+++ b/index.ipynb
@@ -18,7 +18,7 @@
     "5. [Support Vector Machines](05_support_vector_machines.ipynb)\n",
     "6. [Decision Trees](06_decision_trees.ipynb)\n",
     "7. [Ensemble Learning and Random Forests](07_ensemble_learning_and_random_forests.ipynb)\n",
-    "8. [Dimensionality Reduction](08_dimensionality_reduction.ipynb)\n",
+    "8. [Dimensionality Reduction & Unsupervised Learning](08_dimensionality_reduction.ipynb)\n",
     "9. [Up and running with TensorFlow](09_up_and_running_with_tensorflow.ipynb)\n",
     "10. [Introduction to Artificial Neural Networks](10_introduction_to_artificial_neural_networks.ipynb)\n",
     "11. [Deep Learning](11_deep_learning.ipynb)\n",