diff --git a/requirements.txt b/requirements.txt
index 50ca8c1..542b7c7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -79,7 +79,7 @@ lxml==4.6.2
 Markdown==3.3.4
 MarkupSafe==2.0.1
 matplotlib==3.4.3
-mistune==0.8.4
+mistune==2.0.3
 mkl-fft==1.3.1
 mkl-random==1.2.2
 mkl-service==2.4.0