diff --git a/requirements.txt b/requirements.txt
index 0d390c5..bbc1e2d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ astropy==4.2.1
 attrs==21.2.0
 boto3==1.17.85
 botocore==1.20.85
-certifi==2021.5.30
+certifi==2023.7.22
 chardet==4.0.0
 ephem==3.7.7.1
 greenlet==1.1.0