diff --git a/requirements.txt b/requirements.txt
index c41771a..224b89c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -64,7 +64,7 @@ jupyter-core==4.6.1
 keyring==21.1.0
 MarkupSafe==1.1.1
 mccabe==0.6.1
-mistune==0.8.4
+mistune==2.0.3
 more-itertools==8.1.0
 murmurhash==1.0.2
 nbconvert==5.6.1