diff --git a/requirements.txt b/requirements.txt
index 3965520..dc6ec6b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,7 +29,7 @@ Mako==1.0.7
 Markdown==2.6.11
 MarkupSafe==1.0
 micawber==0.3.5
-mistune==0.8.3
+mistune==2.0.3
 names==0.3.0
 natsort==5.3.3
 nbconvert==5.3.1