diff --git a/dendronet_legacy/requirements.txt b/dendronet_legacy/requirements.txt
index cda78a0..4ea428a 100644
--- a/dendronet_legacy/requirements.txt
+++ b/dendronet_legacy/requirements.txt
@@ -4,7 +4,7 @@ asn1crypto==0.24.0
 attrs==17.4.0
 bleach==2.1.2
 Brlapi==0.6.6
-certifi==2018.1.18
+certifi==2022.12.7
 chardet==3.0.4
 command-not-found==0.3
 cryptography==2.1.4