diff --git a/requirements.txt b/requirements.txt
index caf09f0..bacbccf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,7 +31,7 @@ lazy-object-proxy==1.4.3
 Markdown==3.2.2
 MarkupSafe==1.1.1
 mccabe==0.6.1
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.6.1
 nbformat==5.0.7
 notebook==6.0.3