diff --git a/requirements.txt b/requirements.txt
index d612b79..7e17c69 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -38,7 +38,7 @@ jupyter-core==4.4.0
 Markdown==2.6.11
 MarkupSafe==1.0
 matplotlib==2.1.2
-mistune==0.8.3
+mistune==2.0.3
 msgpack-numpy==0.4.1
 msgpack-python==0.5.4
 murmurhash==0.28.0