diff --git a/sphinx/requirements.txt b/sphinx/requirements.txt
index abad429..acd65ba 100644
--- a/sphinx/requirements.txt
+++ b/sphinx/requirements.txt
@@ -1,6 +1,6 @@
 alabaster==0.7.11
 Babel==2.6.0
-certifi==2018.8.13
+certifi==2022.12.7
 chardet==3.0.4
 CommonMark==0.5.4
 docutils==0.14