diff --git a/matplot-lib/requirements.txt b/matplot-lib/requirements.txt
index a7e3227..857027b 100644
--- a/matplot-lib/requirements.txt
+++ b/matplot-lib/requirements.txt
@@ -6,7 +6,7 @@ jupyterlab==1.2.21
 jupyterlab-server==0.2.0
 MarkupSafe==1.0
 matplotlib==3.0.0
-mistune==0.8.4
+mistune==2.0.3
 munch==2.3.2
 nbconvert==5.4.0
 nbformat==4.4.0