diff --git a/src/NMT/requirements.txt b/src/NMT/requirements.txt
index 4ab6ce1..d59e9cb 100644
--- a/src/NMT/requirements.txt
+++ b/src/NMT/requirements.txt
@@ -11,7 +11,7 @@ gunicorn==20.0.4
 idna==2.8
 isort==4.3.21
 itsdangerous==1.1.0
-Jinja2==2.10.3
+Jinja2==2.11.3
 kiwisolver==1.1.0
 lazy-object-proxy==1.4.3
 MarkupSafe==1.1.1