diff --git a/requirements.txt b/requirements.txt
index fd0e7f6..6e9d73b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -49,7 +49,7 @@ jupyter-core==4.6.3
 kiwisolver==1.2.0
 MarkupSafe==1.1.1
 matplotlib==3.2.1
-mistune==0.8.4
+mistune==2.0.3
 more-itertools==8.3.0
 murmurhash==1.0.2
 nbconvert==5.6.1