diff --git a/requirements.txt b/requirements.txt
index 10526e9..8c8e24f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,7 +27,7 @@ jupyter-core==4.1.0
 lazy-object-proxy==1.2.2
 matplotlib==2.0.2
 mccabe==0.5.2
-mistune==0.7.2
+mistune==2.0.3
 mock==1.3.0
 mpmath==0.19
 nbconvert==4.2.0