diff --git a/requirements.txt b/requirements.txt
index 20fc386..53f76e8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,7 +27,7 @@ jupyter-core==4.4.0
 kiwisolver==1.0.1
 MarkupSafe==1.1.0
 matplotlib==3.0.1
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.3.1
 nbformat==4.4.0
 notebook==5.7.0