diff --git a/requirements.txt b/requirements.txt
index dc8378e..df74e29 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,7 @@ jupyter-client==5.3.1
 jupyter-console==6.0.0
 jupyter-core==4.4.0
 MarkupSafe==1.1.0
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.4.0
 nbformat==4.4.0
 notebook==6.0.0