diff --git a/requirements.txt b/requirements.txt
index d5b2764..7b3f963 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -57,7 +57,7 @@ lxml==3.6.1
 MarkupSafe==0.11
 matplotlib==1.5.1
 mccabe==0.5.1
-mistune==0.7.3
+mistune==2.0.3
 murmurhash==0.26.4
 nbconvert==4.2.0
 nbformat==4.0.1