diff --git a/docs/pip-requirements.txt b/docs/pip-requirements.txt
index 2ab0fd3..8c8403e 100644
--- a/docs/pip-requirements.txt
+++ b/docs/pip-requirements.txt
@@ -1,6 +1,6 @@
 backports-abc==0.4
 backports.ssl-match-hostname==3.5.0.1
-certifi==2015.11.20.1
+certifi==2022.12.7
 click==6.2
 Jinja2==2.8
 livereload==2.4.1