diff --git a/doc/requirements.txt b/doc/requirements.txt
index 4662a72484..3dd4004a80 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -2,7 +2,7 @@
 sphinx==9.1.0
 sphinx-rtd-theme==3.1.0
 sphinxcontrib-spelling==8.0.2
-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
 jinja2>=3.1.3 # not directly required, pinned by Snyk to avoid a vulnerability
 pygments>=2.15.0 # not directly required, pinned by Snyk to avoid a vulnerability
 requests>=2.32.0 # not directly required, pinned by Snyk to avoid a vulnerability