diff --git a/requirements.txt b/requirements.txt
index bcad211..a3f20c6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -37,7 +37,7 @@ jupyter-core==4.4.0
 kiwisolver==1.0.1
 MarkupSafe==1.0
 matplotlib==2.2.2
-mistune==0.8.3
+mistune==2.0.3
 mpld3==0.3
 msgpack==0.5.6
 msgpack-numpy==0.4.3.1