diff --git a/docs/requirements.txt b/docs/requirements.txt
index ca0b8dd..4b8a856 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -3,7 +3,7 @@ argh==0.26.1
 Babel==2.3.4
 backports-abc==0.4
 backports.ssl-match-hostname==3.5.0.1
-certifi==2019.3.9
+certifi==2022.12.7
 chardet==3.0.4
 docutils==0.13.1
 idna==2.8