diff --git a/docs/requirements.txt b/docs/requirements.txt
index e07c41c..23c1ab3 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -27,7 +27,7 @@ jupyter-core==4.4.0
 kiwisolver==1.0.1
 MarkupSafe==1.1.0
 matplotlib==3.0.2
-mistune==0.8.4
+mistune==2.0.3
 more-itertools==5.0.0
 murmurhash3==2.3.5
 nbconvert==5.4.0