diff --git a/requirements.txt b/requirements.txt
index 2325bad..43c873c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,7 +29,7 @@ kiwisolver==1.0.1
 line-profiler==2.1.2
 MarkupSafe==1.1.0
 matplotlib==2.2.3
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.4.0
 nbformat==4.4.0
 notebook==5.7.2