diff --git a/requirements.txt b/requirements.txt
index 7c8437b..fc0faee 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -41,7 +41,7 @@ llvmlite==0.29.0
 MarkupSafe==1.1
 matplotlib==2.2.2
 mccabe==0.6.1
-mistune==0.8.3
+mistune==2.0.3
 more-itertools==7.2.0
 nbconvert==5.3.1
 nbformat==4.4.0