diff --git a/requirements.txt b/requirements.txt
index 339d6be..b767b5f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -47,7 +47,7 @@ kiwisolver==1.1.0
 Logbook==1.5.3
 lru-dict==1.1.6
 lxml==4.4.1
-Mako==1.1.0
+Mako==1.2.2
 MarkupSafe==1.1.1
 matplotlib==3.1.1
 mistune==0.8.4