diff --git a/requirements.txt b/requirements.txt
index f15abc0..12b5313 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -49,7 +49,7 @@ locket==0.2.0
 MarkupSafe==1.0
 matplotlib==2.2.2
 mccabe==0.6.1
-mistune==0.8.3
+mistune==2.0.3
 mkl-fft==1.0.4
 mkl-random==1.0.1
 msgpack==0.5.6