diff --git a/requirements.txt b/requirements.txt
index 8fcefc2..7252c0f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ gevent==1.2.2
 greenlet==0.4.13
 idna==2.6
 itsdangerous==0.24
-Jinja2==2.11.3
+Jinja2==3.1.5
 MarkupSafe==1.0
 python-engineio==3.9.0
 python-socketio==1.9.0