diff --git a/requirements.txt b/requirements.txt
index 1c3c4c3..8ff2f0e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -58,7 +58,7 @@ llvmlite==0.29.0
 Markdown==3.1.1
 MarkupSafe==1.1.1
 matplotlib==3.1.1
-mistune==0.8.4
+mistune==2.0.3
 murmurhash==1.0.0
 nbconvert==5.6.0
 nbformat==4.4.0