diff --git a/requirements.txt b/requirements.txt
index 0b289ae..33466eb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -39,7 +39,7 @@ llvmlite==0.29.0
 locket==0.2.0
 MarkupSafe==1.1.1
 matplotlib==3.1.1
-mistune==0.8.4
+mistune==2.0.3
 msgpack==0.6.1
 nbconvert==5.5.0
 nbformat==4.4.0