diff --git a/requirements.txt b/requirements.txt
index 8c32751..8a4a9cd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,7 +27,7 @@ boto==2.49.0
 boto3==1.9.202
 botocore==1.12.202
 Bottleneck==1.2.1
-certifi==2019.6.16
+certifi==2022.12.7
 cffi==1.12.3
 cftime==1.0.3.4
 chardet==3.0.4