diff --git a/requirements_incl_notebooks.txt b/requirements_incl_notebooks.txt
index 471719c..c2ee2df 100644
--- a/requirements_incl_notebooks.txt
+++ b/requirements_incl_notebooks.txt
@@ -39,7 +39,7 @@ lesscpy==0.13.0
 lxml==4.2.5
 MarkupSafe==1.1.1
 matplotlib==3.1.1
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.5.0
 nbformat==4.4.0
 networkx==2.4