diff --git a/requirements.txt b/requirements.txt
index e5e0fdf..10d752a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ Flask-WTF==0.14.3
 idna==2.9
 itsdangerous==1.1.0
 Jinja2==2.11.2
-Mako==1.1.3
+Mako==1.2.2
 MarkupSafe==1.1.1
 marshmallow==3.5.1
 nose==1.3.7