diff --git a/docs/requirements.txt b/docs/requirements.txt
index 8c3a692..e508ae4 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -9,7 +9,7 @@ pygments>=2.15.0 # not directly required, pinned by Snyk to avoid a vulnerabilit
 # https://github.com/domdfcoding/enum_tools/issues/118
 sphinx==8.2.3
 setuptools>=65.5.1 # not directly required, pinned by Snyk to avoid a vulnerability
-certifi>=2023.7.22 # not directly required, pinned by Snyk to avoid a vulnerability
+certifi>=2026.4.22 # not directly required, pinned by Snyk to avoid a vulnerability
 requests>=2.32.5 # not directly required, pinned by Snyk to avoid a vulnerability
 jinja2>=3.1.6 # not directly required, pinned by Snyk to avoid a vulnerability
 idna>=3.7 # not directly required, pinned by Snyk to avoid a vulnerability