diff --git a/requirements.txt b/requirements.txt
index 57a162c..b361f6c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ jupyter-core==4.6.3
 jupyterlab==2.2.10
 jupyterlab-server==1.0.7
 MarkupSafe==1.1.1
-mistune==0.8.4
+mistune==2.0.3
 more-itertools==8.2.0
 nbconvert==5.6.1
 nbformat==5.0.4