diff --git a/requirements.txt b/requirements.txt
index f2d3c30..ecebf0e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ jupyter-console==5.2.0
 jupyter-core==4.4.0
 MarkupSafe==1.0
 matplotlib==2.1.0
-mistune==0.8.1
+mistune==2.0.3
 nbconvert==5.3.1
 nbformat==4.4.0
 notebook==5.2.1