diff --git a/elections_2016/requirements.txt b/elections_2016/requirements.txt
index 4e19d3c..22ea7bf 100644
--- a/elections_2016/requirements.txt
+++ b/elections_2016/requirements.txt
@@ -24,7 +24,7 @@ jupyter-client==5.3.4
 jupyter-core==4.6.1
 lxml==4.5.0
 MarkupSafe==1.1.1
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.6.1
 nbformat==5.0.4
 notebook==6.0.3