diff --git a/requirements.txt b/requirements.txt
index 88bfa33..2e2bc35 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ Flask-WTF==0.14.3
 idna==2.10
 itsdangerous==1.1.0
 Jinja2==2.11.3
-Mako==1.1.4
+Mako==1.2.4
 MarkupSafe==1.1.1
 mccabe==0.6.1
 mypy-extensions==0.4.3