diff --git a/2-svd-nmf-topic-modeling.ipynb b/2-svd-nmf-topic-modeling.ipynb
index f9d50bf..54531f3 100644
--- a/2-svd-nmf-topic-modeling.ipynb
+++ b/2-svd-nmf-topic-modeling.ipynb
@@ -104,7 +104,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "- [Data source](http://scikit-learn.org/stable/datasets/twenty_newsgroups.html): Newsgroups are discussion groups on Usenet, which was popular in the 80s and 90s before the web really took off.  This dataset includes 18,000 newsgroups posts with 20 topics.\n",
+    "- [Data source](https://scikit-learn.org/stable/datasets/index.html#newsgroups-dataset): Newsgroups are discussion groups on Usenet, which was popular in the 80s and 90s before the web really took off.  This dataset includes 18,000 newsgroups posts with 20 topics.\n",
     "- [Chris Manning's book chapter](https://nlp.stanford.edu/IR-book/pdf/18lsi.pdf) on matrix factorization and LSI \n",
     "- Scikit learn [truncated SVD LSI details](http://scikit-learn.org/stable/modules/decomposition.html#lsa)\n",
     "\n",