diff --git a/requirements.txt b/requirements.txt
index 0e3fc8e..d4dff19 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,7 +29,7 @@ ipython==7.29.0
 itsdangerous==2.0.1
 jedi==0.18.0
 jinja2==3.0.1
-mako==1.1.4
+mako==1.3.11
 markupsafe==2.0.1
 matplotlib-inline==0.1.3
 numpy==1.21.4