diff --git a/requirements.txt b/requirements.txt
index e7279d2..a712ffe 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,7 +30,7 @@ kiwisolver==1.0.1
 mapsplotlib==1.1.2
 MarkupSafe==1.0
 matplotlib==2.2.3
-mistune==0.8.3
+mistune==2.0.3
 nbconvert==5.4.0
 nbformat==4.4.0
 networkx==2.1