diff --git a/requirements.txt b/requirements.txt
index 72f9bd2..979e3f3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ idna==2.1
 inflection==0.3.1
 ipaddress==1.0.16
 lxml==3.6.0
-Mako==1.0.4
+Mako==1.2.2
 MarkupSafe==0.23
 ndg-httpsclient==0.4.0
 netaddr==0.7.18