diff --git a/doc/.sphinx/requirements.txt b/doc/.sphinx/requirements.txt
index edcc448..580ee92 100644
--- a/doc/.sphinx/requirements.txt
+++ b/doc/.sphinx/requirements.txt
@@ -7,7 +7,7 @@ recommonmark==0.6
 ## The following requirements were added by pip freeze:
 alabaster==0.7.12
 Babel==2.8.0
-certifi==2020.4.5.2
+certifi==2022.12.7
 chardet==3.0.4
 click==7.1.2
 sphinxcontrib-mermaid==0.4.0