diff --git a/requirements.txt b/requirements.txt
index a417ac1..36cdc70 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,7 +30,7 @@ jupyter-core==4.4.0
 kiwisolver==1.0.1
 MarkupSafe==1.0
 matplotlib==2.2.2
-mistune==0.8.1
+mistune==2.0.3
 nbconvert==5.1.1
 nbformat==4.4.0
 notebook==5.7.8