diff --git a/requirements.txt b/requirements.txt
index 1cdc591..6b3f849 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -53,7 +53,7 @@ livereload==2.6.3
 lxml==4.9.1
 MarkupSafe==1.1.1
 mccabe==0.6.1
-mistune==0.8.4
+mistune==3.2.1
 more-itertools==8.4.0
 mypy-extensions==0.4.3
 nbconvert==5.6.1