diff --git a/requirements.txt b/requirements.txt
index 35244aa..ad47924 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -125,7 +125,7 @@ matplotlib==2.2.4
 mccabe==0.6.1
 menuinst==1.4.16
 mesh-tensorflow==0.1.9
-mistune==0.8.4
+mistune==2.0.3
 mkl-fft==1.0.14
 mkl-random==1.1.0
 mkl-service==2.3.0