diff --git a/IRIS_data_download/requirements.txt b/IRIS_data_download/requirements.txt
index 20b82de..62b71f2 100644
--- a/IRIS_data_download/requirements.txt
+++ b/IRIS_data_download/requirements.txt
@@ -1,4 +1,4 @@
-certifi==2019.9.11
+certifi==2022.12.7
 cffi==1.13.2
 chardet==3.0.4
 cryptography==2.8