diff --git a/requirements.txt b/requirements.txt
index 7a1bde2..0e03d2c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -65,7 +65,7 @@ macaroonbakery==1.1.3
 Mako==1.0.7
 MarkupSafe==1.1.1
 #meld==3.18.0
-mistune==0.8.4
+mistune==2.0.3
 multidict==4.5.2
 murmurhash==1.0.2
 nbconvert==5.6.0