diff --git a/requirements.txt b/requirements.txt
index d2bf57f07e..0aa65431a5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-certifi>=2024.7.4 # MPL -- oldest release without a known advisory (CVE-2024-39689)
+certifi>=2026.10.19 # MPL -- oldest release without a known advisory (CVE-2024-39689)
 python-dateutil>=3.0.0  # BSD
 pydantic>=2.14.1  # MIT
 setuptools>=84.2.1  # PSF/ZPL