diff --git a/requirements.txt b/requirements.txt
index 3af577ff92..684eeb18e4 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>=2026.7.22 # MPL -- oldest release without a known advisory (CVE-2024-39689)
 python-dateutil>=2.8.2  # BSD
 pydantic>=2.14.1  # MIT
 setuptools>=84.0.0  # PSF/ZPL