diff --git a/requirements.txt b/requirements.txt
index f8dc199..40b8a68 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -84,7 +84,7 @@ Markdown==3.0.1
 MarkupSafe==1.1.0
 mccabe==0.6.1
 menuinst==1.4.14
-mistune==0.8.4
+mistune==2.0.3
 more-itertools==4.3.0
 mpmath==1.1.0
 msgpack==0.6.0