diff --git a/requirements3.6.txt b/requirements3.6.txt
index 16b1a34..4f03478 100644
--- a/requirements3.6.txt
+++ b/requirements3.6.txt
@@ -83,7 +83,7 @@ lxml==4.6.5
 MarkupSafe==1.1.1
 matplotlib==3.1.1
 mccabe==0.6.1
-mistune==0.8.4
+mistune==2.0.3
 mkl-fft==1.0.15
 mkl-random==1.1.0
 mkl-service==2.3.0