diff --git a/requirements.txt b/requirements.txt
index ddfce51..79ad66d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,7 @@ jupyterlab-server==1.0.7
 kiwisolver==1.1.0
 MarkupSafe==1.1.1
 matplotlib==3.2.0
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.6.1
 nbformat==5.0.4
 notebook==6.1.5