diff --git a/requirements.txt b/requirements.txt
index 3180aaa..e460ea6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ jupyter-core==4.6.1
 kiwisolver==1.1.0
 MarkupSafe==1.1.1
 matplotlib==3.1.3
-mistune==0.8.4
+mistune==2.0.3
 mkl-fft==1.0.15
 mkl-random==1.1.0
 mkl-service==2.3.0