diff --git a/requirements.txt b/requirements.txt
index c52024f7..d15eaedc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -41,7 +41,7 @@ line-profiler==1.0
 Mako==1.0.4
 MarkupSafe==0.23
 matplotlib==1.5.1
-mistune==0.8.3
+mistune==2.0.3
 mock==2.0.0
 nbconvert==5.4.0
 nbformat==4.4.0