diff --git a/requirements.txt b/requirements.txt
index 70df52c..1e2a91b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -37,7 +37,7 @@ lxml==4.4.2
 Mako==1.1.0
 MarkupSafe==1.1.1
 matplotlib==3.1.1
-mistune==0.8.4
+mistune==2.0.3
 mkl-fft==1.0.15
 mkl-random==1.1.0
 mkl-service==2.3.0