diff --git a/doc/requirements.txt b/doc/requirements.txt
index 4179db2..e9e4613 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -4,7 +4,7 @@ Flask==0.12.2
 Flask-Babel==0.11.2
 Frozen-Flask==0.15
 itsdangerous==1.1.0
-Jinja2==2.11.1
+Jinja2==2.11.3
 MarkupSafe==1.1.1
 pkg-resources==0.0.0
 pytz==2019.3