diff --git a/requirements.txt b/requirements.txt
index 8720d71..95331be 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ jupyterlab-server==1.2.0
 lazy-object-proxy==1.4.3
 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