diff --git a/docs/requirements.txt b/docs/requirements.txt
index 108ed50..1568b3f 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -2,7 +2,7 @@ alabaster==0.7.12
 Babel==2.9.1
 blockdiag==2.0.1
 breathe==4.18.1
-certifi==2022.12.7
+certifi==2023.7.22
 chardet==3.0.4
 docutils==0.16
 funcparserlib==0.3.6