diff --git a/requirements.txt b/requirements.txt
index ac3338d..7cfedc0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ alabaster==0.7.6
 attrs==15.2.0
 Babel==1.3
 backports.ssl-match-hostname==3.4.0.2
-certifi==2015.4.28
+certifi==2022.12.7
 cffi==1.5.2
 configobj==4.7.2
 cryptography==1.3.1