diff --git a/requirements.txt b/requirements.txt
index 8eb145e..5ed221e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -32,7 +32,7 @@ jupyter-console==6.1.0
 jupyter-core==4.6.3
 lxml==4.5.0
 MarkupSafe==1.1.1
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.6.1
 nbformat==5.0.4
 notebook==6.0.3