diff --git a/2021/9-azure-web-apps/requirements.txt b/2021/9-azure-web-apps/requirements.txt
index f4b04fd..3e0d2bf 100644
--- a/2021/9-azure-web-apps/requirements.txt
+++ b/2021/9-azure-web-apps/requirements.txt
@@ -2,7 +2,7 @@ asgiref==3.2.7
 astroid==2.2.5
 azure-mgmt-nspkg==3.0.2
 azure-nspkg==3.0.2
-certifi==2020.4.5.1
+certifi==2022.12.7
 chardet==3.0.4
 colorama==0.4.1
 Django==3.0.14