diff --git a/requirements.txt b/requirements.txt
index 447f8511..a79add9b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -40,7 +40,7 @@ jsonschema==2.6.0
 jupyter-core==4.4.0
 kiwisolver==1.0.1
 lxml==4.2.5
-Mako==1.0.7
+Mako==1.2.2
 markdown2==2.3.5
 MarkupSafe==1.0
 matplotlib==2.2.3