diff --git a/requirements.txt b/requirements.txt
index b4d4e06..9b500d1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ jupyter-core==4.5.0
 jupyterlab==1.1.1
 jupyterlab-server==1.0.6
 MarkupSafe==1.1.1
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.6.0
 nbformat==4.4.0
 notebook==6.0.1