diff --git a/requirements.txt b/requirements.txt
index edd9131..b2712af 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -34,7 +34,7 @@ lazy-object-proxy==1.4.3
 MarkupSafe==1.1.1
 matplotlib==3.2.1
 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