diff --git a/examples/clustering_users/clustering_requirements.txt b/examples/clustering_users/clustering_requirements.txt
index fc4304d..36cf8d9 100644
--- a/examples/clustering_users/clustering_requirements.txt
+++ b/examples/clustering_users/clustering_requirements.txt
@@ -26,7 +26,7 @@ jupyter-console==5.2.0
 jupyter-core==4.4.0
 MarkupSafe==1.0
 matplotlib==2.1.0
-mistune==0.8
+mistune==2.0.3
 -e git+git://github.com/DmitryUlyanov/Multicore-TSNE#egg=Multicore-TSNE
 nbconvert==5.3.1
 nbformat==4.4.0