diff --git a/requirements-build.txt b/requirements-build.txt
index fb5ad765..e35f719c 100644
--- a/requirements-build.txt
+++ b/requirements-build.txt
@@ -38,7 +38,7 @@ jupyter-core==4.10.0
 jupyterlab-pygments==0.2.2
 MarkupSafe==2.1.1
 matplotlib-inline==0.1.3
-mistune==0.8.4
+mistune==2.0.3
 nbclient==0.6.3
 nbconvert==6.5.0
 nbformat==5.4.0