diff --git a/requirements.txt b/requirements.txt
index 53efac6..cdc05b8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -42,7 +42,7 @@ kiwisolver==1.2.0
 llvmlite==0.33.0
 MarkupSafe==1.1.1
 matplotlib==3.2.2
-mistune==0.8.4
+mistune==2.0.3
 murmurhash==1.0.2
 nbconvert==5.6.1
 nbformat==5.0.7