diff --git a/requirements.txt b/requirements.txt
index 15483870..e817ae72 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -35,7 +35,7 @@ llvmlite==0.28.0
 mapclassify==2.0.1
 MarkupSafe==1.1.1
 matplotlib==3.1.0
-mistune==0.8.4
+mistune==2.0.3
 munch==2.3.2
 nbconvert==5.5.0
 nbformat==4.4.0