diff --git a/requirements.txt b/requirements.txt
index 7d667de..f0c41a7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -40,7 +40,7 @@ jsonschema==2.6.0
 jupyter-client==5.2.3
 jupyter-core==4.4.0
 MarkupSafe==1.0
-mistune==0.8.3
+mistune==2.0.3
 nb-anacondacloud==1.4.0
 nb-conda==2.2.1
 nb-conda-kernels==2.1.0