diff --git a/requirements.txt b/requirements.txt
index 0993f84..46882c7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -59,7 +59,7 @@ kiwisolver==1.1.0
 MarkupSafe==1.1.1
 matplotlib==3.1.1
 mccabe==0.6.1
-mistune==0.8.4
+mistune==2.0.3
 more-itertools==7.2.0
 murmurhash==1.0.2
 nbconvert==5.5.0