diff --git a/requirements.txt b/requirements.txt
index 7368fbed..718fb17a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-Mako==1.0.7
+Mako==1.2.2
 numpy==1.15.2
 pybind11==2.2.4
 pyopencl==2018.2