diff --git a/requirements.txt b/requirements.txt
index 1435272..38cbeca 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ Jinja2==2.10
 joblib==0.11
 m2r==0.1.12
 MarkupSafe==1.0
-mistune==0.8.3
+mistune==2.0.3
 mpmath==1.0.0
 numpy==1.13.3
 optlang==1.3.0