diff --git a/requirements.txt b/requirements.txt
index b8761ae..39aeca9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,7 +25,7 @@ itsdangerous==1.1.0
 Jinja2==2.11.1
 jsonschema==3.2.0
 limits==1.5
-Mako==1.1.1
+Mako==1.2.2
 MarkupSafe==1.1.1
 pyrsistent==0.15.7
 python-dateutil==2.8.1