diff --git a/requirements.txt b/requirements.txt
index 499520a22..c57ecc3f8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -55,7 +55,7 @@ jupyter-core==4.6.3
 kiwisolver==1.1.0
 MarkupSafe==1.1.1
 matplotlib==3.3.0
-mistune==0.8.4
+mistune==2.0.3
 mizani==0.7.1
 munch==2.5.0
 nbclient==0.2.0