diff --git a/IntroToCloudComputing/CloudFunctionForPubsub/requirements.txt b/IntroToCloudComputing/CloudFunctionForPubsub/requirements.txt
index a18ab50..3642602 100644
--- a/IntroToCloudComputing/CloudFunctionForPubsub/requirements.txt
+++ b/IntroToCloudComputing/CloudFunctionForPubsub/requirements.txt
@@ -1,5 +1,5 @@
 cachetools==3.1.1
-certifi==2019.9.11
+certifi==2022.12.7
 chardet==3.0.4
 google-api-core==1.14.3
 google-auth==1.7.1