diff --git a/requirements.txt b/requirements.txt
index da0856d..5b998ef 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ imagesize==0.7.1
 Jinja2==2.10
 m2r==0.1.12
 MarkupSafe==1.0
-mistune==0.8.1
+mistune==2.0.3
 numpy==1.13.3
 pandas==0.21.0
 PyFunctional==1.0.0