diff --git a/requirements.txt b/requirements.txt
index c32a6d1..9af9b6d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -34,7 +34,7 @@ jsonschema==2.6.0
 # jupyter-client==5.2.3
 # jupyter-core==4.4.0
 lazy-object-proxy==1.3.1
-Mako==1.0.7
+Mako==1.2.2
 MarkupSafe==1.0
 mccabe==0.6.1
 mistune==0.8.4