diff --git a/examples/webapp/requirements.txt b/examples/webapp/requirements.txt
index eb52d4a..0981bb2 100644
--- a/examples/webapp/requirements.txt
+++ b/examples/webapp/requirements.txt
@@ -1,7 +1,7 @@
 Flask==0.8
 Jinja2==2.6
 Werkzeug==0.8.3
-certifi==0.0.8
+certifi==2022.12.7
 chardet==1.0.1
 distribute==0.6.24
 requests==0.11.2