diff --git a/requirements.txt b/requirements.txt
index 18e5b55..eef018e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -50,7 +50,7 @@ Markdown==3.2.1
 MarkupSafe==1.1.1
 matplotlib==3.1.3
 mccabe==0.6.1
-mistune==0.8.4
+mistune==2.0.3
 msgpack==1.0.0
 nbconvert==5.6.1
 nbformat==5.0.6