diff --git a/doc/requirements.txt b/doc/requirements.txt
index ed6d655..7965432 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -4,7 +4,7 @@ autograd==1.4
 autoray==0.3.1
 Babel==2.9.1
 cachetools==5.0.0
-certifi==2022.12.7
+certifi==2023.7.22
 charset-normalizer==2.0.12
 docutils==0.16
 future==0.18.2