diff --git a/requirements.txt b/requirements.txt
index 535963d9..4e81c0cb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ alabaster==0.7.6
 argh==0.26.1
 Babel==2.0
 backports.ssl-match-hostname==3.4.0.2
-certifi==2015.4.28
+certifi==2022.12.7
 CommonMark==0.5.4
 docutils==0.12
 Jinja2==2.8