diff --git a/istio/istio-1.2.5/samples/bookinfo/src/productpage/requirements.txt b/istio/istio-1.2.5/samples/bookinfo/src/productpage/requirements.txt
index fd4a17f..7b496aa 100644
--- a/istio/istio-1.2.5/samples/bookinfo/src/productpage/requirements.txt
+++ b/istio/istio-1.2.5/samples/bookinfo/src/productpage/requirements.txt
@@ -1,4 +1,4 @@
-certifi==2019.3.9
+certifi==2022.12.7
 chardet==3.0.4
 Click==7.0
 contextlib2==0.5.5