diff --git a/service-mesh/istio/sample/istio-plural-course/03/demos/src/productpage/requirements.txt b/service-mesh/istio/sample/istio-plural-course/03/demos/src/productpage/requirements.txt
index 9cc5ef8..360fa56 100644
--- a/service-mesh/istio/sample/istio-plural-course/03/demos/src/productpage/requirements.txt
+++ b/service-mesh/istio/sample/istio-plural-course/03/demos/src/productpage/requirements.txt
@@ -1,4 +1,4 @@
-certifi==2022.12.7
+certifi==2023.7.22
 chardet==3.0.4
 Click==7.0
 contextlib2==0.5.5