diff --git a/requirements.txt b/requirements.txt
index 4e6d2f8..b8a65ba 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ cryptography==2.8
 Flask==1.1.1
 Flask-SQLAlchemy==2.4.1
 itsdangerous==1.1.0
-Jinja2==2.11.1
+Jinja2==2.11.3
 MarkupSafe==1.1.1
 pycparser==2.19
 PyMySQL==0.9.3