diff --git a/requirements.txt b/requirements.txt
index d403a5a..e14abcc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,7 +25,7 @@ jupyter-core==4.4.0
 kiwisolver==1.0.1
 MarkupSafe==1.0
 matplotlib==2.2.2
-mistune==0.8.3
+mistune==2.0.3
 munch==2.2.0
 nbconvert==5.3.1
 nbformat==4.4.0