diff --git a/requirements.txt b/requirements.txt
index 5ee080a..6853d78 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ jupyter==1.0.0
 jwcrypto==0.7
 jwt==0.6.1
 markupsafe==1.1.1
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.6.1
 nbformat==5.0.4
 notebook==6.0.3