diff --git a/requirements.txt b/requirements.txt
index 2787ea0..9a3ff26 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ jupyter-console==5.2.0
 jupyter-core==4.4.0
 MarkupSafe==1.0
 matplotlib==2.1.1
-mistune==0.8.3
+mistune==2.0.3
 nbconvert==5.3.1
 nbformat==4.4.0
 notebook==5.3.1