diff --git a/requirements.txt b/requirements.txt
index bbe20ae..6c2fd14 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -46,7 +46,7 @@ kiwisolver==1.2.0
 Markdown==3.2.2
 MarkupSafe==1.1.1
 matplotlib==3.2.1
-mistune==0.8.4
+mistune==2.0.3
 more-itertools==8.2.0
 mpmath==1.1.0
 multiprocess==0.70.9