diff --git a/visitor-counter/requirements.txt b/visitor-counter/requirements.txt
index b14d7e5..5c360cb 100644
--- a/visitor-counter/requirements.txt
+++ b/visitor-counter/requirements.txt
@@ -4,7 +4,7 @@ Flask==1.0.2
 Flask-Migrate==2.4.0
 Flask-SQLAlchemy==2.3.2
 itsdangerous==1.1.0
-Jinja2==2.10
+Jinja2==2.11.3
 Mako==1.1.0
 MarkupSafe==1.1.1
 PyMySQL==0.9.3