diff --git a/aws-cloud-formations/resource-state-monitor/instanceStateChangeNotification/requirements.txt b/aws-cloud-formations/resource-state-monitor/instanceStateChangeNotification/requirements.txt
index 415c99e..c93b9e0 100644
--- a/aws-cloud-formations/resource-state-monitor/instanceStateChangeNotification/requirements.txt
+++ b/aws-cloud-formations/resource-state-monitor/instanceStateChangeNotification/requirements.txt
@@ -1,4 +1,4 @@
-certifi==2022.12.7
+certifi==2023.7.22
 chardet==3.0.4
 idna==2.9
 requests==2.23.0