diff --git a/requirements.txt b/requirements.txt
index aa8d99f..3b4d45e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -38,7 +38,7 @@ llvmlite==0.33.0
 MarkupSafe==1.1.1
 markupsafe==1.1.1
 matplotlib==3.2.2
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.6.1
 nbformat==5.0.7
 netCDF4==1.5.3