diff --git a/source/requirements.txt b/source/requirements.txt
index 8895efd..aa3ec6c 100644
--- a/source/requirements.txt
+++ b/source/requirements.txt
@@ -6,7 +6,7 @@ Flask-FlatPages==0.7.0
 Frozen-Flask==0.15
 isort==4.3.4
 itsdangerous==1.1.0
-Jinja2==2.10
+Jinja2==2.11.3
 lazy-object-proxy==1.3.1
 Markdown==3.0.1
 markdown2==2.3.8