diff --git a/requirements-3.13.txt b/requirements-3.13.txt
index 39205c9f..3b68270c 100644
--- a/requirements-3.13.txt
+++ b/requirements-3.13.txt
@@ -11,7 +11,7 @@ buildbot-worker==4.3.0
 buildbot-wsgi-dashboards==4.3.0
 buildbot-www==4.3.0
 cbor2==6.1.5
-certifi==2026.7.22
+certifi==2026.10.19
 cffi==2.1.1
 charset-normalizer==3.5.2
 click==8.5.0