diff --git a/requirements.txt b/requirements.txt
index 948526e..c7c0156 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ idna==2.8
 itsdangerous==1.1.0
 Jinja2==2.10
 jsonschema==3.0.1
-Mako==1.0.9
+Mako==1.2.2
 MarkupSafe==1.1.1
 marshmallow==2.19.0
 marshmallow-enum==1.4.1