diff --git a/requirements.txt b/requirements.txt
index 1471155..fe8b4a5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ azure-functions==1.0.0a5
 azure-functions-worker==1.0.0a6
 azure-storage-blob==1.4.0
 azure-storage-common==1.4.0
-certifi==2018.11.29
+certifi==2023.7.22
 cffi==1.11.5
 chardet==3.0.4
 cryptography==2.5