diff --git a/examples/server/wsgi/requirements.txt b/examples/server/wsgi/requirements.txt
index fcef9fa..81eff5f 100644
--- a/examples/server/wsgi/requirements.txt
+++ b/examples/server/wsgi/requirements.txt
@@ -5,7 +5,7 @@ eventlet==0.20.1
 Flask==1.0.2
 greenlet==0.4.12
 itsdangerous==1.1.0
-Jinja2==2.11.3
+Jinja2==3.1.3
 MarkupSafe==1.1.0
 packaging==16.8
 pyparsing==2.1.10