diff --git a/requirements.txt b/requirements.txt
index 0e9782f..73dac4d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -55,7 +55,7 @@ kiwisolver==1.1.0
 Logbook==1.2.1
 lru-dict==1.1.6
 lxml==4.1.1
-Mako==1.0.7
+Mako==1.2.2
 MarkupSafe==1.0
 matplotlib==2.2.2
 mistune==0.8.4